How do I solve this fractional quadratic equation and what would the answer be?

Question

Question... 2x squared +9x+7..... please help me as soon as possible.. and i have a nother one too.. how do i factor completely... question is 3y cubed -y squared -4y... Thats it and i would love an answer ASAP.. THANK U

Answer

the answer to 1st ques is (2x+7)(x+1) .

Answer

This is done almost through trial and error
basically the rules are (ax + b)(mx + n) = am x^2 + (an + bm) x + bn
and guess 

2x^2 +9x +7 = (2x +7)(x+1)

3y^3 -y^2 -4y = y(3y^2 - y - 4)

= y(3y -4)(y +1)

How do I solve this fractional quadratic equation and what would the answer be?

Responses (2)