For this case we must add the terms of the following expression:

It is noted that the terms are similar, so we can add:
We take common factor 

We add the terms within the parenthesis:

finally we have:

Answer:

Answer:
184704
Step-by-step explanation:
The sum: "+"
a number: "x"
a square of a number: "x²"
Answer: x + x² = 42 → x² + x = 42
Answer:
x ≤ 2
Step-by-step explanation:
2 red rose cost $ 18
x flowers cost $ 11x
"At most " means ≤.
11x + 18 ≤ 40
11x ≤ 40 - 18
11x ≤ 22
x ≤ 2