展开 (x+y^2)sqrt(x+y^2)

解答

展开

(x + y^{2}) x + y^{2}

x x + y^{2} + y^{2} x + y^{2}

求解步骤

(x + y^{2}) x + y^{2}

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

使用分配律:

a (b + c) = ab + a c

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

= x + y^{2} x + x + y^{2} y^{2}

= x x + y^{2} + y^{2} x + y^{2}

e x p an d det (ln (\frac{( a - k ) ^{5} \cdot ( b + k )}{a + c}))

e x p an d - 3^{\frac{1}{3}} (2 x^{2} - 3 x + 5 + 2 x^{\frac{1}{2}} - 4 x^{\frac{3}{2}})

e x p an d 2 x^{2 x} (ln (x) + 1)

e x p an d \frac{1}{s \cdot ( 1 + 2 \cdot s + 3 \cdot s ^{2} + 1.5 s ^{3} )}

e x p an d y d x - 2 (x - y) d y