Question

What does a quadratic expression look like?

Answer 1

it looks something like this αx^2+bx+c
(x+_)(x+_)

Answer 2

quadratic means 2nd degree, means its highest exponent is 2

standard form would be ax²+bx+c

some examples could be
4x²+3x-2
or
x²
or
3x²-2
or
5x²+2x