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3 July, 09:48

Select all of the following that are quadratic equations.

x^2-2x=4x+1

x^3-6x^2+8=0

5x-3=0

2x^2+12x=0

5x-1=3x+8

9x^2+6x-3=0

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  1. 3 July, 13:03
    0
    Any equation that has a term with exponent greater than 1 is a quadratic equation.

    Therefore the 1st, 2nd, 4th and 6th equations are quadratic equations
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