<span>3x^2 - 4 = 7x is the standard form. To get standard form into quadratic you must have one side of the equation equal zero. The easiest way to so is subtracting 7x on both sides of the equation.
</span><span>3x^2 - 4 = 7x
-7x -7x
3x^2 -7x - 4 = 0
So, </span>3x^2 -7x - 4 = 0 is the quadratic form.
If this is for a rectangle the volume of it would be 39/2 or 19 1/2
1. we know that product (x) so divide it by 2 and then minus some from 1 side and add on to the other side