Which of the following equations, is not a quadratic equation?
A
4x2−7x+3=0
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B
3x2−4x+1=0
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C
2x−7=0
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D
4x2−3=0
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Solution
The correct option is B2x−7=0 Alternate (A):4x2−7x+3=0 The maximum exponent of variable x is 2. So it is a quadratic equation. Alternate (B):3x2−4x+1=0 The maximum exponent of variable x is 2. So it is a quadratic equation. Alternate (C):2x−7=0 The maximum exponent of variable x is 1. So it is not a quadratic equation.