Question

(x – 15)2 = 121
Solve by taking the the square root

Answer 1

=) x² - 15² = 121

=) x² - 225 = 121

=) x² = 121 + 225

=) x = root 346

=) x = 18.6

Answer 2

`x = 26` ,
`x = 4`

solving steps:

`(x - 15)^2 = 121`

`√((x - 15)^2) = \pm √(121)`

`x- 15= \pm 11`

`x = 11 + 15` ,
`x = -11 +15`

`x = 26` ,
`x = 4`