What is the standard form of the quadratic equation 2x² + 1 = 7x?
Answer and explanation
Correct answer: 2x² − 7x + 1 = 0
The standard form of a quadratic equation is ax² + bx + c = 0. Moving 7x to the left changes its sign to −7x, giving 2x² − 7x + 1 = 0. Therefore, option A is correct. Exam tip: the sign of a term changes whenever it is transposed to the other side of the equation.
Frequently asked questions
What is the correct answer to this question?
2x² − 7x + 1 = 0
Why is this the correct answer?
The standard form of a quadratic equation is ax² + bx + c = 0. Moving 7x to the left changes its sign to −7x, giving 2x² − 7x + 1 = 0. Therefore, option A is correct. Exam tip: the sign of a term changes whenever it is transposed to the other side of the equation.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Quadratic Equations. Topic: Methods of Solving Quadratic Equations.
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