evaluate 135^2-125^2
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Answered by
2
(130+5)square-(130-5)square
=4(130x5)=4x650=2600answer
=4(130x5)=4x650=2600answer
loveAnny:
if it helped then mark it as brainliest
can u tell me how that 4 came
(a+b)square-(a-b) square=asq+bsq+2ab-(asq+bsq-2ab)=4ab. from here understood... hope it helps
ya i understood
ohk
Answered by
1
(135)"2- (125)"2
=(100+35)"2 - (100+25)"2
=100"2 + 35"2 + 2(100)(35) - {(100)"2 +25"2+2(100)(25)
=100"2-100"2+35"2-25"2+7000-5000
=1225-625+2000
=2600
=(100+35)"2 - (100+25)"2
=100"2 + 35"2 + 2(100)(35) - {(100)"2 +25"2+2(100)(25)
=100"2-100"2+35"2-25"2+7000-5000
=1225-625+2000
=2600
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