展开 (x+2*log_{2}(x))(x-2)

解答

展开

(x + 2 \cdot lo g_{2} (x)) (x - 2)

x^{2} - 2 x + 2 x lo g_{2} (x) - 4 lo g_{2} (x)

求解步骤

(x + 2 lo g_{2} (x)) (x - 2)

Apply FOIL method

(x + 2 lo g_{2} (x)) (x - 2) : x^{2} - 2 x + 2 x lo g_{2} (x) - 4 lo g_{2} (x)

= x^{2} - 2 x + 2 x lo g_{2} (x) - 4 lo g_{2} (x)

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

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

e x p an d (2 u, 2 v, 1) \cdot (9 - u^{2} - v^{2}, 9 - u^{2} - v^{2}, u)

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

e x p an d (- 4 x^{2} + 6 y^{2} + 2 x + 1 = 0) \frac{- 1}{4}