Question

(x-2) (x+1) = (x-1) (x+3)​

Answer 1

Step-by-step explanation:

Given equation (x−2)(x+1)=(x−1)(x+3)

To find whether the given equation is a quadratic equation or not

Sol:

(x−2)(x+1)=(x−1)(x+3)

⟹x

2

+x−2x−2=x

2

+3x−x−3

⟹x

2

−x

2

+x−2x−3x+x−2+3=0

⟹−3x+1=0

This is not a quadratic equation as an equation of degree two is called a quadratic equation.

And, a polynomial when equated to zero or some value becomes an equation.

Answer 2

Answer:

x(x+1)-2(x+1)=x(x+3)-1(x+3)

x²+1x-2x-2=x²+3x-1x-3

x²-x²+1x+1x=3x+2x-3+2

2x=5x-1

1=5x-2x

1=3x

x=1/3