Step-by-step explanation:
output is 3 times of input so it's like this x ➡ 3x
Answer:
6x^2 + 8x + 28
Step-by-step explanation:
2 times the length plus 2 times the width gives the perimeter
2(3x^2 + 3x + 6) + 2(x + 8)
6x^2 + 6x + 12 + 2x + 16
6x^2 + 8x + 28
Answer:
No because one is negative and the other one is positive
Step-by-step explanation:
The expression is a bit invalid. You can't add variables by variables.