evaluate the sum using identies 96multiply104
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= (90+4)(90+14)
= 90^2+90(4+14)+4^2=14^2
= 810+1440+16+172
=2438
lokanadharaju:
this answer is wrong
Answered by
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=(100-4)(100+4)
{ (x-a)(x+a)=x^2-a^2}
so...
== 100^2 - 4^2
= 10000-16
=9984
{ (x-a)(x+a)=x^2-a^2}
so...
== 100^2 - 4^2
= 10000-16
=9984
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