Find the factors of 2a2 + 9a − 18.

(2a − 3)(a + 6)

(2a + 3)(a − 6)

(2a − 9)(a + 2)

(2a − 2)(a + 9)

Question

Find the factors of 2a2 + 9a − 18.

(2a − 3)(a + 6)

(2a + 3)(a − 6)

(2a − 9)(a + 2)

(2a − 2)(a + 9)

swissgirl · Answer

hmm how abt we dont do the guessing game and just solve it

swissgirl · Answer

A=2  B=9 and C=-18
So we need to find 2 numbers that  when you multiply it equals A*C=2*18=36 and when you add these 2 numbers you get B=9

anonymous · Answer

Yup. Pick an answer choice. Multiply it out and see if you get $2a^2 +9a -18$

anonymous · Answer

i got (2a + 3)(a − 6)

swissgirl · Answer

Close enough. You gotta sharpen your guessing skills :P

anonymous · Answer

Do you know how to multiply that out? Remember FOIL

mertsj · Answer

@brianasosaa  You will find many people in this world that you may think of as mean.  If you want them to help you, you might have to overlook it.

swissgirl · Answer

Are you referring to me ? @Mertsj  :P

radar · Answer

Close, but no cigar!  Check out the signs.

radar · Answer

It would of been correct if the expression had of been:  2a^2 - 9a -18 but alas that was not the case.