Answer:
The solution is given in the photo
Answer:

Step-by-step explanation:
The given expression is

Factor the first two and the last two.


Apply difference of two squares to the leftmost factor.

Answer:
The parts are 27 cm and 64 cm long.
Step-by-step explanation:
Let the shorter part be x.
"The longer part is 10 cm more than twice as long as the shorter part."
shorter part: x
longer part: 2x + 10
total length: x + 2x + 10
total length: 91
x + 2x + 10 = 91
3x + 10 = 91
3x = 81
x = 27
2x + 10 = 2(27) + 10 = 54 + 10 = 64
Answer: The parts are 27 cm and 64 cm long.
x=6, add thirty to both sides 6 squared is 36, plus six is 42