Math, asked by sudhirsaini, 1 year ago

please solve this 5th ques.

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Answered by Sanjana111111
2
Hope this will help u
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Answered by Yashp1
0
(7.8)^2 - (2.2)^2 ÷ 5.6
=(7.8+2.2)(7.8-2.2) ÷ 5.6 _____[a^2 - b^2 = (a+b)(a-b)]
=10 × 5.6 ÷ 5.6
=56 ÷ 5.6
=10
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