Question

Which equation is a quadratic equation?
Answer
y = 2x(5 - x) + 7x
y = 8x + 2
y + x2 = (x - 2)(x + 8)
y - 7x = (x2 + 1)(x - 3)

Answer 1

simplify the choices

A) \(y = 10x - 2x^2 + 7x\)

B) \(y = 8x + 2\)

C) \(y + x^2 = x^2 + 6x - 16\)

D) \(y - 7x = x^3 - 3x^2 + x - 3\)

Answer 2

which one is quadratic then?

Answer 3

Is it A

Answer 4

the equation having second degree

Answer 5

is it A

Answer 6

yep it's A

Answer 7

yha! it is A

Answer 8

C is possible BUT x^2 gets canceled so A is the only answer ^_^

Answer 9

ok thks