Sagot :
[tex] 4y^2+54y-90=\\
2(2y^2+27y-45)=\\
2(2y^2+30y-3y-45)=\\
2(2y(y+15)-3(y+15))=\\
2(2y-3)(y+15)[/tex]
4y²+54y-90
= 2(2y²+27y-45)
= 2(2y-3)(y+15) <- this is the final answer. :)
= 2(2y²+27y-45)
= 2(2y-3)(y+15) <- this is the final answer. :)