Question

True or False: The factors of x(x + 8) - 4(x + 8) after using the grouping method is 2(x + 8)(x - 4).

Answer 1

can u factorise xy-4y? @AntoinetteWillman

Answer 2

No.

Answer 3

hmm k.
what is common to both xy and 4y?

Answer 4

y?

Answer 5

ya good:) nw what remains when u take it out from xy+4y

Answer 6

x+4

Answer 7

ya good:)
so xy+4y=y(x+4)

Answer 8

Nw x(x + 8) - 4(x + 8)=?

Answer 9

So its true right?

Answer 10

nope.

Answer 11

Lol oops thank you for your help and time.

Answer 12

do u knw y it is nt true?

Answer 13

Because they are equivalent to each other.

Answer 14

nope.
x(x + 8) - 4(x + 8)=(x-4)(x+8) but the answer given is 2(x-4)(x+8)