find the square of 32 without actual multiplication
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Answered by
3
32^2=(30+2)^2=900+4-120=784
zeeshu2:
how 120 comes
rplie
a^2 + b^2 - 2ab
2 x 2 x 30 =120
Answered by
0
32^2 = (30+2)^2
= (30)^2+( 2)^2+2(30)(2)
{It is due to formula (a+b)^2 = a^2 +b^2 +2ab}
= 900 + 4 + 120
= 1024
Hope you understand.
Please mark it brainliest.
= (30)^2+( 2)^2+2(30)(2)
{It is due to formula (a+b)^2 = a^2 +b^2 +2ab}
= 900 + 4 + 120
= 1024
Hope you understand.
Please mark it brainliest.
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