Answer:

Step-by-step explanation:
Given


Required
Find x such that: 
This gives:

Collect like terms


Expand

Factorize

Factor out x - 1

Solve:

i'm thinking yes how ever tou want to do it because i am only in 4th grade
Answer:
it is just 64-18=48
Step-by-step explanation:
you have to just keep 64 the same and do the 9*2. And sum those outcomes.
Answer:
find the double period
Step-by-step explanation:
Shaded area will be the part of the area of the circle which have a central angel = 243
Shaded area = (243/360) π r^2
= (243/360) * 3.14 * 12.5^2
= 331.2