Question

Сократите дробь
$frac{4x+4}{3x^{2}+2x-1 }$

Answer 1

4x+4 // 3x2+2x-1
3x2+2x-1=0
D=16
x1=1/3
x2=-1
3x2+2x-1=3(x+1)(x-1/3)

4x+4//4x2-2x-1=4(x+1)//3(x+1)(x-1/3)=4//3(x-1/3)=4//3x-1
// знак дроби