Solve −2x2 +3x − 9 = 0.
Asked by maham237 @ in Mathematics viewed by 292 People
Answered by maham237 @
-2x^2 + 3x - 9 = 0
The quadratic is not factorable so quadratic formula must be used.
x = (-b + - √(b^2 - 4ac))/2a
a = -2, b = 3, c = -9
x = (-3 + - √(9 - 4*-2*-9))/-4
x = (-3 + - √(-63))/-4
x = -3 + - 3i√7
--------------
-4
x = 3 + 3i√7 x = 3 - 3i√7
------------ ------------
4 4
Similar Questions
Solve x 9 x 5 x 4 1 0
Asked by admin @ in Math viewed by 448 persons
Solve this question which is from complex number
Solve by graphing x^2+2x-3=0
Asked by maham237 @ in Mathematics viewed by 316 persons
Solve by graphing. x2 + 2x – 3 = 0
Solve the equation 1 2x 14 9 x 7 6
Asked by maham237 @ in Mathematics viewed by 299 persons
equation 1/2x+14 - 9/x+7= -6
a. x= -101/12
b. x= 101/12
c. x= -67/12
d. x= 67/12
Solve for x x2 5x a2 a 6 0
Asked by admin @ in Math viewed by 411 persons
Solve for x : x2+5x-(a2+a-6)= 0
What are the solutions of the equation 9x4 – 2x2 – 7 = 0? use u substitution to solve.
Asked by maham237 @ in Mathematics viewed by 451 persons
What are the solutions of the equation 9x4 – 2x2 – 7 = 0? Use u substitution to solve.x = + √7/9 and x = ±1 x = + √7/9 …
Solve x 3 2 x 3 2 0 let u
Asked by maham237 @ in Mathematics viewed by 311 persons
Solve (x + 3)2 + (x + 3) – 2 = 0. Let u = Rewrite the equation in terms of u. (u2 + 3) + u – 2 = …
What are the zeros of the quadratic function f(x) = 2x2 + 16x – 9?
Asked by maham237 @ in Mathematics viewed by 404 persons
2 x2 1 x2 9 x 1 x 14 0
Asked by admin @ in Math viewed by 329 persons
2(x^2+1/x^2 )-9(x+1/x)+14=0 solve
Using the quadratic formula to solve 2x2 = 4x – 7, what are the values of x?
Asked by wiki @ in Mathematics viewed by 350 persons
Solve for x root 6x 7 2x 7 0
Asked by admin @ in Math viewed by 436 persons
Solve for x: under root 6x+7 - (2x-7) =0
What are the x-intercepts of the function f(x) = –2x2 – 3x + 20?
Asked by maham237 @ in Mathematics viewed by 315 persons
What are the x-intercepts of the function f(x) = –2x2 – 3x + 20?
(–4, 0) and
and (4, 0)
(–5, 0) and (2, 0)
(–2, 0) and (5, 0)
What is the discriminant of the quadratic equation 0 = 2x2 + 3x – 5? –37 –31 43 49
Asked by maham237 @ in Mathematics viewed by 380 persons
What is the discriminant of the quadratic equation 0 = 2x2 + 3x – 5?
Asked by maham237 @ in Mathematics viewed by 404 persons
–37
–31
43
49
Solve 5x 3 7 when x is an integer
Asked by admin @ in Math viewed by 388 persons
Question 3 Solve 5x– 3 < 7, when
(i) x is an integer
(ii) x is a real number
Class X1 - Maths -Linear Inequalities Page 122
Solve 24x 100 when x is a natural number
Asked by admin @ in Math viewed by 358 persons
Solve 24x < 100, when (i) x is a natural number (ii) x is an integer. Please answer it fast
Most viewed questions in Mathematics
Unit 6 similar triangles homework 2 similar figures answer key
Asked by maham237 @ in Mathematics viewed by 18347 persons
All things algebra unit 7 polygons and quadrilaterals answer key
Asked by admin @ in Mathematics viewed by 8152 persons
Gina wilson all things algebra 2016 answer key unit 11
Asked by admin @ in Mathematics viewed by 5769 persons
Unit 1 geometry basics homework 4 angle addition postulate answers
Asked by maham237 @ in Mathematics viewed by 3931 persons
Unit 6 exponents and exponential functions homework 8 answer key
Asked by maham237 @ in Mathematics viewed by 3248 persons
The manager of a vacation resort believes that the ages
Asked by maham237 @ in Mathematics viewed by 2920 persons
What is 271 403 rounded to the nearest ten thousand
Asked by maham237 @ in Mathematics viewed by 2781 persons
Unit 1 geometry basics homework 3 angle relationships answer key
Asked by maham237 @ in Mathematics viewed by 2574 persons
Why would a prism beat a sphere in a competition?
Asked by maham237 @ in Mathematics viewed by 2475 persons
An artist sells a painting for 20.50 but uses 5.75
Asked by maham237 @ in Mathematics viewed by 2425 persons
Unit 4 congruent triangles homework 1 classifying triangles answer key
Asked by maham237 @ in Mathematics viewed by 2415 persons
Unit 4 congruent triangles homework 2 angles of triangles
Asked by maham237 @ in Mathematics viewed by 2070 persons
Compare the values of the 2s and 5s in 55220
Asked by maham237 @ in Mathematics viewed by 1792 persons