展开 f(x)(g(x)=2x-3)

解答

展开

f (x) (g (x) = 2 x - 3)

f (x) g (x) = 2 x - 3 f (x)

求解步骤

f (x) (g (x) = 2 x - 3)

= f (x) (2 = xg (x) - 3)

使用分配律:

a (b - c) = ab - a c

a = f (x), b = g (x) = 2 x, c = 3

f (x) g (x) = 2 x - f (x) \cdot 3

f (x) g (x) = 2 x - 3 f (x)

\frac{d}{d x} ((q) (- q^{2} + 3 q - 2))

e x p an d \frac{( m - 1 ) ( n - 1 )}{( m + 1 ) ( n + 1 )}

e x p an d (y - β - δχ)^{2}

e x p an d \frac{7 x + 3}{( x - 4 ) ( x - 2 )}

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