展开 (6e-3f-4)x^2

解答

展开

(6 e - 3 f - 4) x^{2}

6 e x^{2} - 3 f x^{2} - 4 x^{2}

求解步骤

(6 e - 3 f - 4) x^{2}

= x^{2} (6 e - 3 f - 4)

打开括号

= x^{2} \cdot 6 e + x^{2} (- 3 f) + x^{2} (- 4)

使用加减运算法则

+ (- a) = - a

= 6 e x^{2} - 3 f x^{2} - 4 x^{2}

s im pl i f y (3 x - 1 - 5) (3 x - 1 + 5)

e x p an d lo g_{10} (5) (2 x (8 x + 7))

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

e x p an d \frac{x}{( x + 1 ) ( x + 4 )}

e x p an d (2 sin (x) - 1)^{2}