展开 (3/2 , 5/4)y(1/2 ,-3/4)

解答

展开

(\frac{3}{2}, \frac{5}{4}) y (\frac{1}{2}, - \frac{3}{4})

\frac{1}{2} (\frac{3}{2} \cdot \frac{5}{4},) y, - \frac{3}{4} (\frac{3}{2} \cdot \frac{5}{4},) y

求解步骤

(\frac{3}{2}, \frac{5}{4}) y (\frac{1}{2}, - \frac{3}{4})

= (\frac{3}{2} \cdot \frac{5}{4},) (\frac{1}{2}, - \frac{3}{4}) y

使用分配律:

a (b - c) = ab - a c

a = (\frac{3}{2}, \frac{5}{4}) y, b = \frac{1}{2},, c = \frac{3}{4}

= (\frac{3}{2}, \frac{5}{4}) y \frac{1}{2}, - (\frac{3}{2}, \frac{5}{4}) y \frac{3}{4}

= \frac{1}{2} (\frac{3}{2} \cdot \frac{5}{4},) y, - \frac{3}{4} (\frac{3}{2} \cdot \frac{5}{4},) y

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

e x p an d (sec (u) - tan (u)) (csc (u) + 1)

d o main f (x) = lo g_{5} (x) (x + 2)

s im pl i f y (x - y i)^{4}

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