X^4-81 =
(x^2-9)(x^2+9) =
(x+3)(x-3)(x^2+9)
There are two real roots (at x=3,-3).
Answer: 116.93ft^2
Explanation: find the area of the circle
A= pi•r^2
A=(3.14)•1.5^2= 7.07
Then find the area of the rectangle
A=L•W
A=15.5•8=124
Then do 124-7.07=116.93
You have to subtract the area of the circle from the area of the rectangle because the circle is not shaded in
Where’s the problem where it explains what’s she is subtracting?
