Question

Factor completely: 5x(x + 3) + 6(x + 3)
Can some one please help. i dont understand it at all

Answer 1

Hint:

ba + ca = a(b+c)

In this case, a = (x + 3)

Answer 2

eq. is 5x^2+15x+6x+18

Answer 3

@deadman340 , we're trying to factor completely here.

Answer 4

Similar Example:

1. Recognize that we have two terms and x + 7 is the common expression:
2x(x + 7) + 3(x+7)

2. Factor out x + 7 by way of distributive rule:


a = (x+7)
b = 2x
c = 3

Since ab + ac = a(b+c)

Therefore:
2x(x+7) + 3(x+7) = (x+7)(2x + 3)

3. That's it


Okay, your turn.