Question

write a quadratic equation with -3/4 and 4 as its roots. write the equation in fomr ax^2+bx+c=0, where a,b, and c are integers.

Answer 1

If a quadratic equation has roots a and b, then is has factors x - a and x - b.
To find the quadratic equation, write
(x - a)(x - b) = 0
In your case, replace a and b with -3/4 and 4.

Answer 2

This guy's advice was really helpful. I don't see what else you need.

Answer 3

Ok, here's a little more help.
After you replace a and b with the numbers, multiply both sides by 4 to get rid of the denominator of 4.
Then multiply the two factors together.