Hope this helps with the answer to your question:)
Answer:
I think it's 126cm not sure
Answer:

Step-by-step explanation:
Because of the power of a power property, which states that
, where m and n are real numbers, the expression you mentioned can be simplified by applying this property like this: 
X intercept: (- 1/7, 0)
Y intercept: (0, 1/4)