8. 8(3a – 2b)² - 10(3a – 26)
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Step-by-step explanation:
8((3a)^2+(2b)^2-2(3a)(2b))-10*3a+10*26
=8(9a^2+2b^2-12ab)-30a+260
=72a^2+16b^2-96ab-30a+260
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