Resposta:

?

a)

5x - xy + 15 - 3y

= x.(5 - y) + 3.(5 - y)

= (5-y).(x + 3)

b)

2ax + 3a + 4bx + 6b = a. (2x + 3) + 2b. (2x + 3)

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

c)

ax - 2a + x - 2

= a.(x - 2) + 1.(x - 2) =

= (x - 2).(a + 1)

d)

x³ + 3x² + 2x + 6

= x²(x + 3) + 2.(x + 3)

= (x + 3).(x² + 2)

E)

10x² - 15xy - 4x + 6y

= 5x.(2x - 3y) - 2.(2x - 3y)

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

Resposta:

Explicação passo a passo:

e) a (x+y) + b(x+y)

=(a+b)(x+y)

f)x(2+y)+4(2+y)

=(x+4)(2+y)

g)x(5-y)+3(5-y)

(x+3)(5-y)

h)a(2x+3) + 2b(2x+3)

=(a+b)(2x+3)

i)a(x-2) + 1(x-2)

=(a+1)(x-2)

j)x(x^2+2)+ 3(x^2+2)

=(x+3)(x^2 + 2)

l)x(y-1) -1(y-1)

=(x-1)(y-1)

m)5x(2x-3y) -2(2x-3y)

=(5x-2)(2x-3y)