Please help fast! I’ll mark brainlist ANSWER ONLY IF YOU KNOW

x - 10

Step-by-step explanation:

first, i rewrote the expression.

x^2 + 2x - 10x - 20

then, i factored it.

x x (x + 2) - 10 (x + 2)

finally, i factored it once more.

solution: (x + 2) x (x - 10)

so, x - 10 is the factor that you need.

D. (x - 10)

Step-by-step explanation:

X^2 - 8x - 20

(x - 10) * ( x + 2)

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it