展开 (3(5x+2)+(15x^2))/(3x+1)

解答

展开

\frac{3 ( 5 x + 2 ) + ( 15 x ^{2} )}{3 x + 1}

\frac{15 x + 6 + 15 x ^{2}}{3 x + 1}

求解步骤

\frac{3 ( 5 x + 2 ) + ( 15 x ^{2} )}{3 x + 1}

去除括号:

(a) = a

= \frac{3 ( 5 x + 2 ) + 15 x ^{2}}{3 x + 1}

乘开

3 (5 x + 2) + 15 x^{2} : 15 x + 6 + 15 x^{2}

= \frac{15 x + 6 + 15 x ^{2}}{3 x + 1}

e x p an d (- ln ∣ tan (x) + sec (x) ∣ + sin (x)) cos (x)

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

e x p an d \frac{\partial}{\partial y} (5 e^{y}) + e^{y} (3 x + 5 y)

s im pl i f y - \frac{2 ( 1 - i ) ^{7}}{( 1 + i ) ^{7}}

e x p an d A (- 2, 1) B (3, 4) C (5, - 2)