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Yes it is. The thing that makes it a quadratic equation is that "x squared" in there.
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Earn +20 ptsQ: Is -2x squared plus 2x plus 1 equals 9 a quadratic equation?
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Continue Learning about Math & Arithmetic
Does the equation a squared plus b squared equals c squared classify as a quadratic equation?
no
What is -2x squared plus 3x plus 5 equals 0?
It is a quadratic equation.
Is x squared plus 7x-30 equals 0 a linear equation?
No, It's a a quadratic equation because you have X squared.
What is 5x squared plus 3x plus 8 equals 0?
It is a quadratic equation in the variable x.
Is 4y squared plus 9 equals - 4 a linear equation?
No. It's a quadratic equation, and it has two solutions.
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