P(x)=2x^3-11x^2+ax-40 if x+4 is a factor of this polynomial what is the value of a
1 answer:
You might be interested in
This is Pythagorean's Theorem, with one leg being 10 and the hypotenuse being 16. Using those values in the theorem looks like this:
and
and
so
Take the square root of both sides to find that b = 12.5
and
and
so
Take the square root of both sides to find that b = 12.5