Question

Please help I need these quickly. Please answer sensibly! I will give brainliest to the correct answer.

Answer 1

Answer:

n+n= 2n

$(3n) ^{2} = 9n ^{2}$

5(n+2)=5n+10

2(n+1)=2n+1

$n \div 4 = \frac{n}{4}$

$n(n - 2 = n{2} - 2n$