Question

Which
one is the quadratic equation?
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Answer 1

Answer:

A quadratic equation is an equation of the second degree, meaning it contains at least one term that is squared. The standard form is ax² + bx + c = 0 with a, b, and c being constants, or numerical coefficients, and x is an unknown variable. One absolute rule is that the first constant "a" cannot be a zero.

Answer 2

A quadratic equation is an equation of the second degree, meaning it contains at least one term that is squared.

Example : -2x² - 4 = 0