Solve x 2 4 5 by graphing the related function

Asked by maham237 @ 13/01/2021 in Mathematics viewed by 329 People

Help please! Solve x^2-4=5 by graphing the related function.
1)there are two solutions 1 and -1
2)there is one solution 1
3)there are no real number solutions.
4)there are two solutions 3 and -3

Answered by maham237 @ 13/01/2021

I think the correct answer from the choices listed above is option 4. The solution of the equation given as x^2-4=5 would be 3 and -3. We calculate as follows:

x^2-4=5
x^2 = 5 + 4 = 9
x = √9
x1 = 3
x2 = -3

Hope this answers the question. Have a nice day. Feel free to ask more questions.

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