Step-by-step explanation:
4x^2-9
=(2x)^2 -3^2
=(2x+3) (2x-3)
Hope this helps you.
Answer:
30?
Step-by-step explanation:
divide 20 by 8 and then times the answer by 12
Answer:
280
Step-by-step explanation:
7*5*4*2=280
(x^2 + 3)(5x + 9)
5x^3 + 9x^2 + 15x + 27
3x(3x-2y)
you have to find a common factor between the two numbers. in this case it's three, so you just divide each number by three.