What are the solutions to the equation x^2-4=21 ?

The solutions to the equation x^2-4=21 are x=5,x=-5

Find the zeros of x^2-4=21

The zeros of x^2-4=21 are x=5,x=-5

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x^{2} - 4 = 21

x = 5, x = - 5

Solution steps

x^{2} - 4 = 21

Move

4

to the right side

x^{2} = 25

For

x^{2} = f (a)

the solutions are

x = f (a), - f (a)

x = 25, x = - 25

25 = 5

- 25 = - 5

x = 5, x = - 5

2 x - x - 24 = 5 x 8 + 5

9 k^{2} - 4

x^{2} - 10 x + 25 = 0

(x + 2)^{2} - 64

2 x^{2} + 8 x + 9 = 0

What are the solutions to the equation x^2-4=21 ?
The solutions to the equation x^2-4=21 are x=5,x=-5
Find the zeros of x^2-4=21
The zeros of x^2-4=21 are x=5,x=-5