Question

What is the factored form of 3x2 + 5x − 12?

(3x + 3)(x + 4)
(3x − 1)(x − 4)
(3x + 4)(x − 3)
(3x − 4)(x + 3)

Answer 1

@misty1212

Answer 2

@lexie<3

Answer 3

@lexie<3

Answer 4

try expanding the 3rd one

Answer 5

and 4th one

Answer 6

look at the last term : it is -12

so the 2 constant terms MUST multiply out to get -12

This means that only the 3rd and 4th options are possible

Both of them have 3x and x so produce 3x^2

so oyu need to evaluate the value for the x term to see which is correct

Answer 7

I think its the last one

Answer 8

i think it might be D ? @MrNood

Answer 9

@MrNood

Answer 10

so the 'x' term coms from



not entirely a clear diagram - but you can see that the x term coms from the sum of multiplying the first term of one bracket and the 2nd of the other