Question

factor by grouping
5x^2-15xy+45y-15x

Answer 1

u know completing squares ?

Answer 2

i could give u the answer... but working on it will be much better

Answer 3

i dont know how to do it

Answer 4

ok i'l teach you

Answer 5

its easy all u have to do is to make squares

Answer 6

look at the eq. u will find terms in x^2 ,xy and x so how about if we take 5x common out of the first two expressions 5x^2 - 15xy try that!

Answer 7

ok now i was wrong bfor u cant do it by cmpleting squares sry but my above reply is right

Answer 8

okay hold on one sec

Answer 9

now when u take 5x common it becomes 5x(x - 3y) and now the problem is with .... the left out .. So u tell me wt taking common will help us to get x-3y in the other part

Answer 10

what do you mean

Answer 11

but the second have the only common is 5

Answer 12

i'm talking about +45y-15x

Answer 13

what if i take -15 common then -> -15 (x-3y)


so the whole eq becomes 5x(x-3y) - 15 ( x- 3y)

then -> (x-3y)(5x-15)
(x-3y)(5x-15)

5(x-3)(x-3y)