pls help ...use the identity
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a²-2ab+b²-(c)²
(a-b)²-(c)²
(a-b+c)(a-b-c)
(a-b)²-(c)²
(a-b+c)(a-b-c)
shashipandey1:
tq fr d exp
wc
Answered by
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a^2 -2ab +b^2 -c^2
the first three terms can be written as
(a-b)^2
so just
write it as
(a-b)^2 -c^2
now we use a^2-b^2 formula
(a-b+c)(a-b-c)
the first three terms can be written as
(a-b)^2
so just
write it as
(a-b)^2 -c^2
now we use a^2-b^2 formula
(a-b+c)(a-b-c)
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