化简 (x-1)(x+3)-(((2x-2))/((x+2)))

解答

化简

(x - 1) (x + 3) - (\frac{( 2 x - 2 )}{( x + 2 )})

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

求解步骤

(x - 1) (x + 3) - (\frac{2 x - 2}{x + 2})

使用法则:

- (a) = - a

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

= (x - 1) (x + 3) - \frac{2 x - 2}{x + 2}

展开

(x - 1) (x + 3) : x^{2} + 2 x - 3

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

s im pl i f y \frac{( a ^{3} )}{( ( a - b ) ( a - c ) )} + \frac{( b ^{3} )}{( ( b - a ) ( b - c ) )} + \frac{( c ^{3} )}{( ( c - a ) ( c - b ) )}

f a c t or x^{6} - 15625

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

s im pl i f y n + 1 + (- 2) n

s im pl i f y ∣ f (x) ∣^{2} - ∣ g (x) ∣^{2}