Question

What is (2x + 2)² and (3x -5)²

Answer 1

OK (2x+2) (2x+2)

4x²+4x+4x+4

4x²+8x+4 then we have (3x-5)²

(3x-5) (3x-5)

9x²-5x-15x-25

9x²-20x-25

if we add the two answers

9x²-20x-25+4x²+4x+4x+4=

13x²-12x-21

Answer 2

16 and -225

Explanation:

2×2=4

then 4²=16

3×(-5)=-15

then-15²=-225