(510*510)-(480*480) please solve this question
Answers
Answered by
1
(510)^2-(480)^2
260100 - 230400
29700
hope it helps......
wwwompk270pdtpel:
wrong
wht is the ans
Answered by
0
since,
a^2-b^2=(a+b)(a-b)
therefore,
(510*510)-(480*480)=(510+480)(510-480)
=990×30
= 29700
a^2-b^2=(a+b)(a-b)
therefore,
(510*510)-(480*480)=(510+480)(510-480)
=990×30
= 29700
this question is Railway exam ask
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