X^2+8x solve by completing the square

x^2 +8x

to complete the square add (b/2) ^2 where b is the coefficient of x

b=8 so (8/2)^2  = 4^2  =16

(x^2 +8x+16)

(x+4)^2

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing im pretty sure that is the right answer

step-by-step explanation:

536

step-by-step explanation: