化简 ((-3+sqrt(x))^2)/(6x-54)

解答

化简

\frac{( - 3 + x ) ^{2}}{6 x - 54}

\frac{9 - 6 x + x}{6 x - 54}

求解步骤

\frac{( - 3 + x ) ^{2}}{6 x - 54}

使用完全平方公式:

(a + b)^{2} = a^{2} + 2 ab + b^{2}

(- 3 + x)^{2} = (- 3)^{2} + 2 (- 3) x + (x)^{2}

= \frac{( - 3 ) ^{2} + 2 ( - 3 ) x + ( x ) ^{2}}{6 x - 54}

化简

(- 3)^{2} + 2 (- 3) x + (x)^{2} : 9 - 6 x + x

= \frac{9 - 6 x + x}{6 x - 54}

e x p an d \frac{14 x}{( x ^{2} - 9 ) ^{2}}

e x p an d (0.9 a + 1.1 b + 1.1 c + \frac{4 d}{3})^{2}

e x p an d s (s = 180 n - 360)

e x p an d (3 t (x) - 5) x t^{'}

e x p an d \frac{( 2 - x ) ( x - 3 ) ( x - 4 )}{24}