Question

Resolva
a (x+2)²
b (x+5)²
c (2x+3)²
d (4y+5)²

Answer 1

x2+4x+4
fórmula: quadrado do primeiro termo, vezes o dobro dos dois termos e quadrado do segundo termo

Answer 2

a)
$(x + 2)^{2} \\ (x + 2) \times (x + 2) \\ x^{2} + 2x + 2x + 4 \\ {x}^{2} + 4x + 4$
b)
${(x + 5)}^{2} \\ (x + 5) \times (x + 5) \\ {x}^{2} + 5x + 5x + 25 \\ {x}^{2} + 10x + 25$
c)
$(2x + 3)^{2} \\ (2x + 3) \times (2x + 3) \\ 4x^{2} + 6x + 6x + 9 \\ 4x ^{2} + 12x + 9$
d)
$(4y + 5)^{2} \\ (4y + 5) \times (4y + 5) \\ 16y^{2} + 20y + 20y + 25 \\ {16y}^{2} + 40y + 25$