Tìm cực trị của hs u=2x^3 +4xy-4x^2+2y^2+7

Rewrite the equation x = 65 - 60p by factoring the side that contains the variable p.

Triangles abc and dfg are given. find the lengths of all other sides of these triangles if: b ∠a≅∠d, ab·dg=ac·df, ac=7 cm, bc=15 cm, fg=20 cm, and df-ab=3 cm.

Given: x - 4x > 0, then the solution set in interval notation is: (-2, 0) true o false