Question

2(3x + 2) =

6x(2x+6)=

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

Answer 1

Respuesta:

2(3x + 2) =6x+4

$=2\cdot \:3x+2\cdot \:2$

$=6x+4$

6x(2x+6)= 12x^2+36x

$6x\left(2x+6\right)=6x\cdot \:2x+6x\cdot \:6\\\\\\=6x\cdot \:2x+6x\cdot \:6$

$=12x^2+36x$

(x+3)(5x+2)=5x^2+17x+6

$\left(x+3\right)\left(5x+2\right)=x\cdot \:5x+x\cdot \:2+3\cdot \:5x+3\cdot \:2\\\\\\=x\cdot \:5x+x\cdot \:2+3\cdot \:5x+3\cdot \:2$

$=5x^2+17x+6$