Answer:
Side PN=26
y=16
Step-by-step explanation:
I put a photo of my work. It’s easier to do that then to try and put it all in words
Answer: 38° and 52°
Steps:
x + 38° = 90°
x = 90° - 38°
x = 52°
90° - 52° = 38°
The answer is 76... I just added the two numbers together
Add 1 to both sides:

In cases like this, we have to remember that a root is always positive, so we can square both sides only assuming that

Under this assumption, we square both sides and we have

The solutions to this equation are

But since we can only accept solutions greater than -1, we discard
and accept
.
In fact, we have

and

which is the only solution.
The answer is 10x^4 - 2x ^3