(3x²+6x+9)(8x-4)= 24x³-12x²+48x²-24x+72x-36= 24x³+36x²+48x-36
R: E
#7) -7,-2,0,3,4
#8) -9,-6,-5,1,8
23.8 inches squared if im wrong sorry but what i did was i added 7.4 plus 7.4 cause there are two of the same side then did the same with 4.5
(3x + 1) + (4x - 17) + (5x - 20) = 180
12x - 36 = 180
12x = 216
x = 18
angle a = 55
angle b = 55
angle c = 70
This is an acute isosceles triangle.
