簡約 25(xy)^4+18(x^2y^2)^2+(-63x^4)y^4

解

簡約

25 (x y)^{4} + 18 (x^{2} y^{2})^{2} + (- 63 x^{4}) y^{4}

- 20 x^{4} y^{4}

解答ステップ

25 (x y)^{4} + 18 (x^{2} y^{2})^{2} + (- 63 x^{4}) y^{4}

(x y)^{4} = x^{4} y^{4}

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

= 25 x^{4} y^{4} + 18 x^{4} y^{4} - 63 x^{4} y^{4}

類似した元を足す:

25 x^{4} y^{4} + 18 x^{4} y^{4} - 63 x^{4} y^{4} = - 20 x^{4} y^{4}

= - 20 x^{4} y^{4}