Answer:
![(5x^2+4y)(5x^2-4y)](https://tex.z-dn.net/?f=%285x%5E2%2B4y%29%285x%5E2-4y%29)
Step-by-step explanation:
has the form
known as a difference of squares. It factors into (a+b)(a-b). To find a and b you take the square root.
![\sqrt{25x^4} =5x^2](https://tex.z-dn.net/?f=%5Csqrt%7B25x%5E4%7D%20%3D5x%5E2)
![\sqrt{16y^2} =4y](https://tex.z-dn.net/?f=%5Csqrt%7B16y%5E2%7D%20%3D4y)
The factored for is (a+b)(a-b).
In this case, it is ![(5x^2+4y)(5x^2-4y)](https://tex.z-dn.net/?f=%285x%5E2%2B4y%29%285x%5E2-4y%29)
7.25+3.75=11 pounds total
11/1.5= 7 plus .5 pounds left
So the greatest number they can make is 7
We know the first place after decimal is tenths
The second place after decimal is hundredths
The third place after decimal is the thousandths place
So for 0.056
0 is at the tenths place
5 is at the hundredths place
and 6 is at the thousandths place
Expanding 22.056 we get
22.056 = 20 + 2 + 0.05 + 0.006
OR
22.056 = ![20+2+\frac{5}{100}+\frac{6}{1000}](https://tex.z-dn.net/?f=20%2B2%2B%5Cfrac%7B5%7D%7B100%7D%2B%5Cfrac%7B6%7D%7B1000%7D)
It's an ugly decimal but it's 94.12
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