Question

Need help please answer

Answer 1

-x^2 + 4

Explanation:

Multiply; (2 + x)(2 - x)

= 4 - 2x + 2x - x^2

Combine Like Terms; 4 (-2x + 2x) -x^2

= 4 - x^2

Put in Final Form;

= -x^2 + 4

If you need to solve for X;

Subtract 4

-4 = -x^2

Divide both sides by -1;

4 = x^2

Square root both sides;

2 = x

Answer 2

the answer is 4-x^2

Explanation:

-2x

and 2x cancel out