what is the value of 0.768 X 0.768 - 2 X 0. 768 X 0.568 + 0.568 x 0.568 without actual multiplication? and how
Answers
Answered by
1
(30+0•5)(30-0•5).
(a+b)(a-b) = a square + b square
(a+b)(a-b) = a square + b square
can you explain briefly
Answered by
9
=> 0.768[ 0.768 - 0.568 ] - 0.568[ 0.768 - 0.568 ]
= 0.768×0.2 - 0.568×0.2
= 0.2×[0.768 - 0.568]
= 0.2×0.2
= 0.04
ans = 0.04
hope it helps you
@di
= 0.768×0.2 - 0.568×0.2
= 0.2×[0.768 - 0.568]
= 0.2×0.2
= 0.04
ans = 0.04
hope it helps you
@di
but this the best way
it can be written as 0.768 square + 2×0.768×0.568+0.568 square
=> 0.768[ 0.768 - 0.568 ] - 0.568[ 0.768 - 0.568 ]
= 0.768×0.2 - 0.568×0.2
= 0.2×[0.768 - 0.568]
= 0.2×0.2
= 0.04
ans = 0.04
hope it helps you
= 0.768×0.2 - 0.568×0.2
= 0.2×[0.768 - 0.568]
= 0.2×0.2
= 0.04
ans = 0.04
hope it helps you
yes obviously it's right
rahul how will you solve it then
you have to do what I have done
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(a+b)(a-b) = a square + b square