18-11v+v^2=0
6x^2+1x-1
5/(x+3) = 2
fully factorize $d^{2}$ -15d+56
Calculate $75\%$ of $56$
g(x)=8
g(x)=2x^2-10
caculate 50% of 12
75,639,207,180,694,978,560 x 2 =
3^9
facotrize 6x^2+x-1
