Question

Factor

2х2-13х - 70
а) (2х-7х+10)
c) (2x+7}(x-10)
Oь) (7х+5х+2)
Od) 2(x+7)(х+10)
ь
ОООО
ос А
dc

Answer 1

2x^2 -13x -70
You can factorise by using the cross method as shown:

2x +7 | +7x
x -10 | -20x
————————
2x^2 -70 -13x

Hence,
2x^2 -13x -70 = (2x + 7)(x - 10)

So the answer is C

Hope this helps :)