Answer:
15x^2 + 14x - 8
Step-by-step explanation:
heres one way to solve...
first you distrubite..
(3x + 4)(5x − 2) ==> 3x(5x - 2) + 4(5x - 2)
3x(5x - 2) + 4(5x - 2) ==> 15x^2 - 6x + 4(5x - 2)
15x^2 - 6x + 4(5x - 2) ==> 15x^2 - 6x + 20x - 8
then combine like terms...
15x^2 - 6x + 20x - 8 ==> 15x^2 + 14x - 8
Therefore, 15x^2 + 14x - 8 is he correct answer
((also for those who need it heres a file of a wrong answer since i got it wrong by following someone elses suggestion XD))