English, asked by Anonymous, 3 months ago

5(3a + b)^2 + 6(3a + b) - 8

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Answered by Anonymous
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Answer:

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✒5(3a+b)2+6(3a+b)−8

⇒ 5(3a+b)(3a+b)+6(3a+b)−8

⇒ 5(3a(3a+b)+b(3a+b))+6(3a+b)−8

⇒ 5(9a² +3ab+b(3a+b))+6(3a+b)−8

⇒ 5(9a² +3ab+3b+b² )+6(3a+b)−8

⇒ 5(9a² +6ab+b² )+6(3a+b)−8

⇒ 45a² +30ab+5b² +6b(3a+b)−8

⇒ 45a² + 30ab+5b² +18a+6b-8

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