Directions: Simplify each algebraic expression by combining like terms.. Show all work. 1. 7x2 – 5x + 10x - 8x2 1 1 1 I 1 - 1 - - - - - - - - - - - 1 1 1 1 1 1 1 1 1 1 11 1 2. – 6a3 + 5a3 + 2a2- a2 = 1 3. - 4(x + 5) - 5(x - 1) 4. -a + 5b - 6a + 5(a + 1) - - 1 - 1 1 1 1 5. 18x4 - 3x - 2x3 + x2 - 10 + 6 . 8

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.

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

you meant circumference well the answer is:

17.27876 miles

area is 23.7583

the radius is 2.75 miles

hope this hmu if needed.