化简 9(2x+4sqrt(x))^2

解答

化简

9 (2 x + 4 x)^{2}

36 x^{2} + 144 x x + 144 x

求解步骤

9 (2 x + 4 x)^{2}

展开

(2 x + 4 x)^{2} : 4 x^{2} + 16 x x + 16 x

= 9 (4 x^{2} + 16 x x + 16 x)

展开

9 (4 x^{2} + 16 x x + 16 x) : 36 x^{2} + 144 x x + 144 x

= 36 x^{2} + 144 x x + 144 x

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

e x p an d (3 + 2 i)^{2}

e x p an d \frac{sin ( 2 x ) ( cot ( x ) - csc ( x ) )}{cot ( x ) + csc ( x )}

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

e x p an d 5000 (- 0.125 e^{- 0.125 x} x + 1.75 e^{- 0.125 x})