Answer:

Step-by-step explanation:
Given

Required
Find x
We have:

Rewrite as:

Expand

Factorize

Factor out x + 520

Split

Solve

Side length must be positive;
So:

The last one if I'm not mistaking
Answer:
q=5 is the answer
Step-by-step explanation:
25-20=5
Y will equal 36. You can figure this out because you know y is double the value of x. If x is 18,you can just multiply it by 2, which equals 36
Answer:
1/27+1/27
Step-by-step explanation: