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17 votes
17 votes
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

User OneWinged
by
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1 Answer

19 votes
19 votes

Answer:

3) 4x² -1

Explanation:

A quadratic equation is a 2nd-degree polynomial equation.

1) an exponential equation (the variable is in the exponent)

2) a cubic equation (degree = 3)

3) a quadratic equation

4) a linear equation (degree = 1)

User AgilePro
by
3.0k points