What are the solutions to the equation x^2+21=142 ?

The solutions to the equation x^2+21=142 are x=11,x=-11

Find the zeros of x^2+21=142

The zeros of x^2+21=142 are x=11,x=-11

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x^{2} + 21 = 142

x = 11, x = - 11

Solution steps

x^{2} + 21 = 142

Move

21

to the right side

x^{2} = 121

For

x^{2} = f (a)

the solutions are

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

x = 121, x = - 121

121 = 11

- 121 = - 11

x = 11, x = - 11

- 2 x^{2} - x + 7 = 0

3 x^{2} = 2 - 5 x

4 x^{2} - 10 x - 4 = 0

n^{2} - 10 = 26

y^{2} - 2 y - 48 = 0

What are the solutions to the equation x^2+21=142 ?
The solutions to the equation x^2+21=142 are x=11,x=-11
Find the zeros of x^2+21=142
The zeros of x^2+21=142 are x=11,x=-11