5X^2 - 45
5(X^2 - 9)
5(X - 3)(X + 3)
4X^2 - 324
4(X^2 - 81)
4(X - 9)(X + 9)
Answer:
60
Step-by-step explanation:
2x+5+x-5=180
add the common things
3x=180
divide stuff
x=60
Area of the circle with radius 2:
A = pi * radius^2
= pi * 2^2
= pi *4
= 4pi cm^2
Area of the circle with radius 4:
A = pi * 4^2
= pi * 16
= 16pi cm^2
16 is not 4*2 so no the statement is incorrect
B is the correct option
