Math, asked by ashi97, 1 year ago

factorise..........

4a²-28a+49...

Answers

Answered by cooltanya

5

= 4a²-28a+49
= 4a^2 -14a -14a +49
= 2a (2a - 7) -7 (2a - 7)
= (2a - 7)(2a - 7)
or (2a - 7)^2

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