化简 (2x^3-4y)(2x^3-4y)

解答

化简

(2 x^{3} - 4 y) (2 x^{3} - 4 y)

(2 x^{3} - 4 y)^{2}

求解步骤

(2 x^{3} - 4 y) (2 x^{3} - 4 y)

使用指数法则:

aa = a^{2}

(2 x^{3} - 4 y) (2 x^{3} - 4 y) = (2 x^{3} - 4 y)^{2}

= (2 x^{3} - 4 y)^{2}

f a c t or 16 x^{5} \cdot y^{2} - 8 x^{2} \cdot y - 24 x^{4} \cdot y^{2} - 40 x^{4} \cdot y^{3}

s im pl i f y - x^{2} + 5 x^{2} + 2 x - 24

e x p an d (x^{2} + y)^{3}

f a c t or 25 x^{2} + 90 x y + 81 y^{2}

s im pl i f y 3 sin^{2} (a) - 6 - 3 cos^{2} (a)