Question 243692
the factors of 12 and -12 "combine" to give 7


4 and 3 are factors of 12; 4 and -3 are factors of -12


4 times 4 is 16; 3 times -3 is -9; 16 and -9 gives 7


(4y - 3) (3y + 4) are the factors of the trinomial