Math, asked by AlokRajmishra, 10 months ago

factoris: 9+42l+49l²

Answers

Answered by aachman68

0

Answer:

x=21/7,21/7

Step-by-step explanation:

9x²+42x-84x+49 ⇒ 9x²-42x+49=0 ⇒ (9x-21)(9x-21) ⇒ x=21/9,21/9

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