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Determine, with explanation, whether each equation is quadratic or not.

(x-8)² - 2x = 7

(x-2)(x-3) = (x-4)(x+9)

x(x-4)(x-3) = 4x

thank you for the efforts! <333​


Sagot :

Determine, with explanation, whether each equation is quadratic or not.

(x-8)² - 2x = 7

Yes, because solving and writing it into standard form will make it a quadratic equation.

(x-2)(x-3) = (x-4)(x+9)

No, because the quadratic term will be cancelled when writing it into standard form which makes it a linear equation.

x(x-4)(x-3) = 4x

No, because solving and writing it into standard form makes it has 3 as the highest exponent which is an example of a cubic equation.