Answer:
C=2pi
Step-by-step explanation:
19-6x
2/3(6-9x)+15
=4-6x+15
=19-6x
It's a mixed number :)
for real
7(x-2)(x+2)
7x^2 -28
Factor out a 7
7(x^2 -4)
The terms inside the parentheses is the difference of squares, so it is factorable (a^2-b^2) = (a-b)(a+b)
