Answer:
+ 9x - 5
Step-by-step explanation:
Take the whole rectangle and subtract the middle so
4x^2 + 4x + 1 - (x^2 -5x + 6) which is actually -x^2 + 5x -6
so 3x^2 + 9x -5
That 10 is the diameter of the circle.
First let's find the area of the square.
A = s^2
Where 's' is the side.
A = 10^2
A = 100
Now let's find the area of the circle.
The '10' is also the diameter of the circle.
A = pi * r^2
A = 3.14 * 5^2
A = 3.14 * 25
A = 78.5
Now subtract this from the area of the square.
100 - 78.5 = 21.5
So the approximate area of the shaded region is 21.5cm^2
Please make your question clearer so that I can help you. What do you mean? Write the whole question below and see what I can do for you.
Its -3 because of the 2 open circles on the line x = -3