Can someone me and explain how they got the answer 15 points

x equals to 8.06, you find this by first using the pythagorean theorem for the triangle on the right, then the one on the left.

Step-by-step explanation:

you bought 31 v bucks

step-by-step explanation:

25+6=31

mrbilldoesmath!

answer: a parabola

steps:

(x-1)(x+4)   = x(x+4) - 1(x+4) = (x^2 + 4x) - (x+4)

                = x^2 +4x -x -4   = x^2 +3x -4

which is a parabola

mrb