展开 (7(x+h)+8)/(9(x+h)-7)

解答

展开

\frac{7 ( x + h ) + 8}{9 ( x + h ) - 7}

\frac{7 x + 7 h + 8}{9 x + 9 h - 7}

求解步骤

\frac{7 ( x + h ) + 8}{9 ( x + h ) - 7}

乘开

9 (x + h) - 7 : 9 x + 9 h - 7

= \frac{7 ( x + h ) + 8}{9 x + 9 h - 7}

乘开

7 (x + h) + 8 : 7 x + 7 h + 8

= \frac{7 x + 7 h + 8}{9 x + 9 h - 7}

e x p an d (ln (x) + 1)^{3}

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

e x p an d 2 (5 - 3 a) - 4 (a + 7 = 92)

e x p an d (1, 0, 2) x (1, - 4, 1)

e x p an d \frac{2401 ( - π + 3 3 )}{6}