<img src="https://tex.z-dn.net/?f=25%283x%20-%20y%29%20%5E%7B2%7D%20%20-%2016%285x%20%2B%203y%29%20%5E%7B2%7D%20%20%3D%20%20" id

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3 years ago

="TexFormula1" title="25(3x - y) ^{2} - 16(5x + 3y) ^{2} = " alt="25(3x - y) ^{2} - 16(5x + 3y) ^{2} = " align="absmiddle" class="latex-formula">
25(

Mathematics

2 answers:

Sedbober [7]3 years ago

8 0

Answer:

-175x^2-630xy-119y^2

Step-by-step explanation:

Arlecino [84]3 years ago

3 0

25(3x-y)²-16(5x+3y)²=25(9x²-6xy+y²)-16(25x²+30xy+9y²)=

=225x²-15xy+25y²-400x²-480xy-144y²=-175x²-630xy-119y²

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