因式分解 x^2+3/2 x-7

解答

因式分解

x^{2} + \frac{3}{2} x - 7

(x - 2) (x + \frac{7}{2})

求解步骤

x^{2} + \frac{3}{2} x - 7

解

x^{2} + \frac{3 x}{2} - 7 = 0 : x = 2, x = - \frac{7}{2}

多项式因此可因式分解为

= (x - (2)) (x - (- \frac{7}{2}))

整理后得

= (x - 2) (x + \frac{7}{2})

f a c t or x^{2 + 5 x + \frac{25}{4}}

f a c t or y ln (x) + y ln (y)

f (x) = 3 + cos (4 x) - 8 sin^{(4)} (x)

f a c t or 8 x^{6} + y^{9} z^{3}

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