5x¹⁰ - 9x⁸ - 9x⁵ + 7x by x⁵ using long division method

Measures of the angle of r, 31 s (x+4) t (3x+9)

Find the area of the unshaded square

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.