which expression is equal to 4p2+32pp−2⋅p2+p−62p3+16p2?; which expression is equal to 2xx−2−x+5x+3?; which expression is equal to 6a2−30aa−2⋅a2+2a−82a3−10a2?; which expression is equal to 8m2+16mm−3⋅m2−m−64m3+8m2?; expression equivalent; 3 x 2/3; 1/2 x 1/4; 2x-1