Answer :

konrad509
[tex] (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[/tex]
arj1ta

answer:

3b²

step-by-step explanation:

(5a² - b²) - (4a² + 3b²) - (a² - 7b²)

= 5a² - b² - 4a² - 3b² - a² + 7b²

  • combine like terms

= 3b²

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