Which expression is equivalent to this polynomial expression? (2x5 + 3y4)(-4x2 + 9y4)
OA -257 + 1115y4 – 12y4 + 12y8
OB.–837 + 181574 – 12x2y4 + 2778
Oc. -2,10 + 11x5y4 – 0274 + 12y16
OD. -8x? +2778

don't know what that says sorry i can't you

step-by-step explanation:

idk what it says

-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