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Mathematics, 15.03.2022 06:10 liyahheadhigh

Which of the following is a quadratic equation? 1) y=2^x
2) y=x^2+2x^3+4
3) 4x^2-1
4) y=2x

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Which of the following is a quadratic equation? 1)
2)
3)
4)...
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