Answer:
According to me, the answer is
Step-by-step explanation:
all real numbers
Answer:

Step-by-step explanation:

Because that's the equation given.
To solve for x, isolate the variable and then divide by the coefficient.

Answer:
2(x^2+9)
Step-by-step explanation:
2x^2 +18
Factor out a 2
2(x^2+9)
Answer:
71
Step-by-step explanation: