which of the following are solutions to the equation below x^2+4x-9=x+1 check all that apply a. 2 b. 4 c. -7 d. -3 e. -5 f. -4

a. and e.

Step-by-step explanation:

Hello, there are two ways to handle this kind of question.

... Either you solve the equation ...

So the right answers are a. and e.

... Or, you check which answer can be right.

We replace x by 2 and the two expressions are equal.

So this is a. 2

We replace x by 4 and the two expressions are not equal.

So this is not b. 4

We replace x by -7 and the two expressions are not equal.

So this is not c. -7

We replace x by -3 and the two expressions are not equal.

So this is not d. -3

We replace x by -5 and the two expressions are equal.

So this is e. -5

We replace x by -4 and the two expressions are not equal.

So this is not f. -4

Thank you.