Answer:
D.
Step-by-step explanation:
D
-7,13
You set the equation in two cases
1) x-3=10
2) x-3=-10
than you solve.
3x²+9x+8
x²+x+x(x+2)+1(x+2)+x(x+3)+2(x+3)
x²+x+x²+2x+x+2+x²+3x+2x+6
x²+x²+x²+x+2x+x+3x+2x+2+6
8 /8 =1
44/8=5,5
so the ratio is 1:5,5
-6= - 9 - 3x
3x = -9 + 6
3x = - 3
Therefore x = -1
