Question

Which equation is a quadratic equation?

y = −4(3x + 2)
y + 3x3 = (x − 2)(3x + 8)
y − 3 = (2x2 + 11)(x − 1) + 3x
y + 5x = −2x(4 − x) + 1

Answer 1

Im tempting to guess D or C :3

Answer 2

quadratics are x^2

Answer 3

but be careful third choice is not quadratic because (2x^2)(x) is 2x^3 and therefore it is cubic (ie to the third power not 2nd power)