Math, asked by pvkriplani111, 3 months ago

please tell me question number 3 and 4​

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Answered by bhabenmashahari44
0

3.

=153²-147²

(a+b)(a-b)

=(153+147)(153-147)

=300×6

=1800

4.

=12.1²-7.9²

(a+b)(a-b)

=(12.1+7.9)(12.1-7.9)

=20×4.2

=84

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