For which equation would x = 12 be a solution? x + 4 = 12 48 ÷ x = 12 12 - x = 4 12x = 144

Show algebraically that f and g are inverse functions f(x)=x^2/-6; g(x)=square root of 2x+12

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)

M∠abc=138° and m∠def=31° . which statement is true about ∠abc and ∠def ? a: the angles are neither complementary nor supplementary. b: the angles are complementary. c: the angles are supplementary.