因式分解 (x-a)^2+5(a-x)

解答

因式分解

(x - a)^{2} + 5 (a - x)

(x - a) (x - a - 5)

求解步骤

(x - a)^{2} + 5 (a - x)

5 (a - x) = - 5 (x - a)

= (x - a)^{2} - 5 (x - a)

因式分解出通项

(x - a) : (x - a) (x - a - 5)

= (x - a) (x - a - 5)

3 x^{2} + 1 = 5 x

(x + 2)^{2} = x^{2} + 4

5 + 2 ∣ 5 - 4 x ∣ = 11

x^{2} + 10 x + 10 = 0

s im pl i f y \frac{64 - 2 ab}{( a - 8 ) ^{2}} + \frac{2 ab - a ^{2}}{( 8 - a ) ^{2}}