Answer:
4x² -4xy -4y -4
Step-by-step explanation:
In this case, a= 2x -y and b= y +2.
(2x -y)² -(y +2)²
= (2x -y +y +2)[2x -y -(y +2)]
= (2x +2)(2x -y -y -2)
= (2x +2)(2x -2y -2)
= 2x(2x) +2x(-2y) +2x(-2) +2(2x) +2(-2y) +2(-2) <em>(expand)</em>
= 4x² -4xy -4x +4x -4y -4
= 4x² -4xy -4y -4
Alternatively, start by expanding the brackets.
(2x -y)² -(y +2)²
= 4x² -4xy +y² -(y² +4y +4)
= 4x² -4xy +y² -y² -4y -4 <em>(</em><em>expand</em><em>)</em>
= 4x² -4xy -4y -4 <em>(</em><em>simplify</em><em>)</em>
pi = 3.14...
pi^2 = 9.86...
3^2 = 9
4^4 = 16
Pi is between sqrt(9) and sqrt(16).
Answer: 62(x) + 225 = 605
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I hope this helps you, and enjoy the rest of your day!!
Isn't it a function considered a function if it has no intersecting lines? Maybe you should graph it and see if it has intersecting lines or not. If it doesn't the it's a function if
it does then it's not. I think..?
Answer:
9/16 gallon
Step-by-step explanation:
You are given the ratio
... (3/16) gallon : (1/3) square foot
Multiply it by 3 (the inverse of 1/3).
... 3·(3/16) gallon : 3·(1/3) square foot
... 9/16 gallon : 1 square foot
