(f-g)(x) = f(x)-g(x)= 2x²-5-3x-3 = 2x² - 5x - 8 = choice B
Solution:
<u>Make the denominators equivalent and solve.</u>
- => 5/8 - 1/10
- => 25/40 - 4/40
- => 21/40 ≈ 1/2
Hoped this helped!
Hello,
For a given perimeter (P) there are an infinity of Area (A)
Let's say x the length, and y the wide of the rectangle
P=2(x+y)
A=xy
k=x-y >=0
As (x+y)²-4xy=(x-y)²: A²-4P=k² or P=(A²-k²)/4
In primus, you will find a graph (abacus) giving P for a A and k given.
Negative Area or P are excluded.(just remind the first quadrant, A>=0 and P>=0)
Side of a square = 4n
Side of the smaller square = 4n÷2 = 2n
Perimeter of one smaller square = 2n x 4 = 8n
Perimeter of 20 smaller squares = 8n x 20 = 160n
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Answer: Perimeter of all the 20 smaller squares = 160n
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