展开 sqrt(3x-2)*(3x-2)

解答

展开

3 x - 2 \cdot (3 x - 2)

3 x 3 x - 2 - 2 3 x - 2

求解步骤

3 x - 2 (3 x - 2)

使用分配律:

a (b - c) = ab - a c

3 x - 2 (3 x - 2) = 3 x - 2 \cdot 3 x - 3 x - 2 \cdot 2

= 3 x - 2 \cdot 3 x - 3 x - 2 \cdot 2

= 3 x 3 x - 2 - 2 3 x - 2

e x p an d x^{2} + 3 x - 28 x^{2} + 3 x - 28

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

e x p an d \frac{2}{x + 1} - \frac{x}{x + 1}

s im pl i f y 5 (75 + 21397)

e x p an d (x^{2} + 1) \frac{d ^{2} y}{d x ^{2}}