Q. 1 E5.0( 2 Votes )

# Check whether the following are quadratic equations:x (2x + 3) = x2 + 1

Given; x (2x + 3) = x2 + 1

2x2 + 3x = x2 + 1

2x2 + 3x − x2 − 1 = 0

x2 +3x − 1 = 0

The highest power of x in the equation is 2;

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