Answer:
7
Step-by-step explanation:
2 x (2) + 3
= 4 + 3
= 7
-1,3i,-3i
X^3+x^2=-9x-9
x^3+x^2+9x+9=0
x^2(x+1)+9(x+1)=0 factorize by taking x+1 common factor
(x+1)(x^2+9)=0
x+1=0 then x=-1
(x^2+9)=0 then x=+ 0r - 3i
the answer is 1/216
hope this might of helped :/
