展开 ((x+a)^2)/(x^2+3)

解答

展开

\frac{( x + a ) ^{2}}{x ^{2} + 3}

\frac{x ^{2} + 2 a x + a ^{2}}{x ^{2} + 3}

求解步骤

\frac{( x + a ) ^{2}}{x ^{2} + 3}

(x + a)^{2} = x^{2} + 2 a x + a^{2}

= \frac{x ^{2} + 2 a x + a ^{2}}{x ^{2} + 3}

e x p an d (π + \frac{π}{6}) \cdot 2

e x p an d A (1, 3) y B (2, - 7)

\frac{d}{d y} ((x) (x y + 2 y - x - 2))

e x p an d \frac{12}{- 8}

e x p an d - 1 (- 3 x^{2} + 2 x - 5 = 0)