Question

How do you factor `x(10x - 7) + 11(10x - 7)`?

Answer 1

In general
`ak + bk = (a+b)(k)`
(This is the Distributive Rule)

In this case `k` is an expression, `(10x-7)`, but the rule still applies

`x(10x-7)+11(10x-7)`

`=(x+11)(10x-7)`