Question

Which equation is a quadratic equation?

y = 2x(5 − x) + 7x

y = 8x + 2

y + x2 = (x − 2)(x + 8)

y − 7x = (x2 + 1)(x − 3)

Answer 1

Check for first one..

Answer 2

A quadratic equation has the form: ax\(^2\) + bx + c = 0 Do you see anything that has BOTH an '=' symbol AND something that could multiply to x\(^2\)? ;-)

Answer 3

uhm the first one?

Answer 4

Yup :)

Answer 5

*nods*