Math, asked by andreapinto, 10 months ago

factorize the following: 7a^2+49a+84

Answers

Answered by anshikaverma29

$7a^2+49a+84=0\\\\7(a^2+7a+12)=0\\\\a^2+7a+12=0\\\\a^2+3a+4a+12=0\\\\a(a+3)+4(a+3)=0\\\\(a+4)(a+3)=0\\\\a=-4\\\\and \\\\a=-3$

Answered by avitaylor101

Step-by-step explanation:

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Here,

7a² + 49a + 84

7a² + 28a + 21 a + 84

7a( a + 4) + 21 ( a + 4)

(7a + 21) ( a + 4) answer

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