Question

me ayudan por favor...!​

Answer 1

1.

$(-3x +3)^{2} = \\-3x^{2} +2*-3x*3+3^{2}\\-3x^{2} -18 +3^{2}$

2.

$(2x-4)^{2} =\\2x^{2} +2*2x*-4+(-4)^{2} \\2x^{2} -16x+16$

3.

$(-4x-5)=\\-4x^{2} +2*-4x*-5+ -5^{2} \\-4x^{2} +40x+ -25$

4.

$(2x+5)^{2}=\\ 2x^{2} +2*2x*5+5^{2} \\2x^{2} +20x+25$