Answer:
9m²-n²
Step-by-step explanation:
(3m+n)(3m-n)
This is so easy algebraic expression.
Just rewrite as,
Simplifying,
[Alternate method is there]
2L + 2W = 92
L = 10 + 2w
2(10+2W) + 2W = 92
20 + 4W + 2W = 92
6W = 72
W = 12 m
L = 10 + 2(12)
L = 10 + 24
L = 34 m
1. 5 units to the right and 8 units down
2. 2 units to the right and 9 units down
that’s all i know that i think is right. i’m super sorry i can’t help with the rest.
Let's assume
that number is x
now, we are given
The difference between nine times a number an 7 is -70
nine times of that number is 9x
so, we can set up equation
now, we can solve for x
so, number is -7.........Answer