How do you solve $(5x + 5)^2 = 100$ ?

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Answer 1 · 2016-08-13T23:14:28

$x = 8/5, or x = -12/5$

We do not have to multiply out the brackets first in order to solve this equation. Find the square root(s) of both sides

$(5x +5)^2 = 100$

$5x +2 = +-10$

There are two possibilities:

$5x +2 = +10 " or "5x +2 = -10$

$5x = 8 " " 5x = -12$

$x = 8/5" " x = -12/5$

How do you solve (5x + 5)^2 = 100 (5x + 5)^2 = 100 ?