What are the solutions to the equation (r-7)^2=81 ?

The solutions to the equation (r-7)^2=81 are r=16,r=-2

Find the zeros of (r-7)^2=81

The zeros of (r-7)^2=81 are r=16,r=-2

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(r - 7)^{2} = 81

r = 16, r = - 2

Solution steps

(r - 7)^{2} = 81

For

(g (x))^{2} = f (a)

the solutions are

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

Solve

r - 7 = 81 : r = 16

Solve

r - 7 = - 81 : r = - 2

The solutions to the quadratic equation are:

r = 16, r = - 2

2 x^{2} - 7 x + 9 = (x - 3) (x + 1) + 3 x

2 x (x + 3) + 1 = 0

(x + 2)^{3} = x (x^{2} - 10 x + 25)

5 x^{2} + 20 x + 19 = 0

9 x^{2} - 125 = 0

What are the solutions to the equation (r-7)^2=81 ?
The solutions to the equation (r-7)^2=81 are r=16,r=-2
Find the zeros of (r-7)^2=81
The zeros of (r-7)^2=81 are r=16,r=-2