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3 years ago

(5a^2 - b^2) - (4a^2 + 3b^2) - (a^2 - 7b^2)

Mathematics

1 answer:

jonny [76]3 years ago

8 0

$(5a^2 - b^2) - (4a^2 + 3b^2) - (a^2 - 7b^2)=\\
5a^2-b^2-4a^2-3b^2-a^2+7b^2=\\
3b^2$

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