Question

Identify which equation is a quadratic equation.

y = −5x − 3

y = −4x(x + 10) + 34

y + x^2 = (x − 4)(x + 3)

y − 2 = (x − 2)(x^2 + 1)

Answer 1

y=-4x(x+10)+34 because this would then be: y=-4x^2-40x+34 and a quadratic equation always has a x^2, a variable x and a constant.

Answer 2

thank u ^-^

Answer 3

No prob.