Question

solve 2 sqrt x+7 - 10 = -8

Answer 1

a) x = -6

b) x = -4

c) x = 32

d) x = 74

Answer 2

Add 10 to both sides, then divide both sides by 2. Then square both sides. Then subtract 7 from both sides. What do you get?

Answer 3

2 sqrt x+7 = 2

Answer 4

The only way this equation makes sense is if it actually means:\[2 \sqrt{x + 7} - 10 = -8\]instead of what is written in the problem statement. So, if you follow those four steps from my first post, you will get your answer.

Answer 5

You did the first step, now do the second step.

Answer 6

\[\frac{ 2\sqrt{x + 7} }{ 2 } = \frac{ 2 }{ 2 } \times \sqrt{x + 7} = 1 \times \sqrt{x + 7}\]