5x^2-15
if you factor it it equals 5(x^2-3) right?
correct
what about 8a+10b-16= 2(4a+5b-8)
3c^4-6c^2-15c= 3(c^4-2c^2-3)
first one is correct, the second should be
3c^4-6c^2-15c= 3(c^4-2c^2-5)
You could easily check if you are correct by simply expanding your answer.
Yes, that's correct! To factor the expression 5x^2 - 15, we can factor out the greatest common factor (GCF), which in this case is 5. This involves dividing each term of the expression by 5:
5x^2 / 5 = x^2
-15 / 5 = -3
So now the expression becomes 5(x^2 - 3). This is the factored form of the expression.