Answer:
-x^2 + 4
Step-by-step 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
the answer is 4-x^2
-2x
and 2x cancel out
