Answer:
403
Step-by-step explanation:
Answer: D
Step-by-step explanation:
First combine like terms.
4n-2n = 2n
now it's a one step equation:
2n=18
divide both sides by 2
n=9
Answer:
x² + 10x + 25
Explanation:
Before we begin, remember the following:
(a + b)(a + b) = (a + b)² = a² + 2ab + b²
Now, for the given we have:
(x + 5)(x + 5)
We can note that the two brackets are identical.
Therefore, we can apply the above rule as follows:
(x + 5)(x + 5) = (x + 5)²
= (x)² + 2(x)(5) + (5)²
= x² + 10x + 25
Hope this helps :)
any other details you could give me ?
