Question

Resouva os produtos notaveis =a)(3+x)² b)(x+5)² c)(x+y)² d)(x+2)² e)(3x+2)²

Answer 1

a)(3+x)² = 3² +2.3.x +x² = 9 +6x +x²

b)(x+5)² = x² +2.x.5 +5² = x² +10x +25

c)(x+y)² = x² +2xy +y²

d)(x+2)² = x² +4x +4

e)(3x+2)²= (3x)² +2.3x.2 +2² = 9x² +12x +4