化简 (x-1)-(x^2-1)

解答

化简

(x - 1) - (x^{2} - 1)

- x^{2} + x

求解步骤

(x - 1) - (x^{2} - 1)

使用法则:

(a) = a

(x - 1) = x - 1

= x - 1 - (x^{2} - 1)

使用分配律:

- (a - b) = - a + b

- (x^{2} - 1) = - x^{2} + 1

= x - 1 - x^{2} + 1

对同类项分组

= - x^{2} + x - 1 + 1

数字相加:

- 1 + 1 = 0

= - x^{2} + x

f a c t or a^{2} x^{4} + a^{3} x^{2} - 5 a^{4} x

s im pl i f y p (x) 4 x^{3} - 12 x^{2} + 11 x - 5

s im pl i f y (- 2 - 7) y (6.1)

f a c t or 6 x^{4} + 29 x^{3} + 30 x^{2} - 11 x - 6

f a c t or 2 x^{2} - 32 y^{2}