Question

can I have some help with this one? Factor completely 24x^2+30z-9.

Answer 1

Looks like you can factor out the \(3\).

Answer 2

Ok so would it be 3(8z^2+10z-3)

Answer 3

Yep, but it should be \(8x^2 \) instead of that z coming in.

Answer 4

oh yea sorry about that lol. so thats it?

Answer 5

are you sure both x and z are in equation........?

Answer 6

so you get -24. two factors of -24 which add up to 10: 6+4... does it matter whether or not the factors are positive or negative? @nitz sorry that was a typo.

Answer 7

wait ,,,,,,firstly what is the exact equation to be factorised???

Answer 8

24x^2+30x-9..... sorry about the confusion.

Answer 9

ok

Answer 10

\[3(8x ^{2}+10x-3)=3(8x ^{2}+12x-2x-3)=3{4x(2x+3)-1(2x+3)}\]

Answer 11

sorry there is a bracket
3{4x(2x+3)-1(2x+3)}
3(4x-1)(2x+3)

Answer 12

didnt get??????

Answer 13

no I got it, thanks for your help!