Question

a) (3x+5).(x+2)=

b) (2x+3).(4x-5)=

c) (3x-1).(2x-2)=
​

Answer 1

Resposta:

a) 3x²+11x+10

b) 8x²+2x-15

c) 6x²-8x+2

Explicação passo a passo:

Answer 2

$a) \\ (3x + 5) \: . \: (x + 2) \\ 3x \: . \: (x + 2) + 5(x + 2) \\ 3x {}^{2} + 6x + 5x + 10 \\ \boxed{\boxed{\boxed{3x {}^{2} + 11x + 10 }}}$

$b) \\ (2x + 3) \: . \: (4x - 5) \\ 2x \: . \: (4x - 5) + 3(4x - 5) \\ 8x {}^{2} - 10x + 12x - 15 \\ \boxed{\boxed{\boxed{8x {}^{2} + 2x - 15}}}$

$c) \\ (3x - 1) \: . \: (2x - 2) \\ 3x \: . \: (2x - 2) - 1(2x - 2) \\ 6x {}^{2} - 6x - 2x + 2 \\ \boxed{\boxed{\boxed{6x {}^{2} - 8x + 2}}}$

atte. yrz