Question

Which equation is a quadratic equation?

y + 7 = −3x(4 − x) + 9x

y = −2x + 5

y + 2x3 = (2x − 2)(x + 5)

y − 9x = (x2 + 1)(5x − 1) + 3

Answer 1

not b cuzz it has no squared variable

Answer 2

i think a cuzz
y=−3x(4 − x) + 9x - 7
y= -12x+3x2+9x-7 distribut the -3x

^x2 term