17. Find the value of 992 - 982 using suitable identity.
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Step-by-step explanation:
Hey I think u asked the wrong question
the question should be find the value of 992×982 using suitable identity...
if ur question is this here's the answer cause the question u asked is absolutely incorrect and the answer should be 10..
ok so,
just write 992 as 100 - 8
and 982 as 100 - 18
its (x+a)(x+b)
which is x^2 + ( a+b) + ab
where x is 100.... a is -8.... and b is -18
just put these value in the identity
=100^2 + ( -8-18) + (-8)(-18)
=10000 - 26 + 144
=10118
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