x^2(x+7)+x(x+7)
the product: 6 × (-4)
12mn+18mp
18xy-3yz
3 x 918
187125.32 = 70000 * (1.1)^x * (1.12)^3 * (1.14)^(6-x)
(x-1/6) * 1/4= 1/6
-2xy-8x
2 x 3 + (6 - 1)
solve x^2-8x-20=0