Question

Check whether the following is a quadratic equation: æ(2x + 3) = x2 +1​

Answer 1

Answer:

Step-by-step explanation:

Given, x(2x+3)=x

2

+1

⇒2x

2

+3x=x

2

+1

⇒2x

2

+3x−x

2

−1=0

⇒x

2

+3x−1=0

∵ The highest power of x in the equation is 2;

∴ It is a quadratic equation.

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Answer 2

Answer:

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