pls ans this question c one
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2
a=0
b=-1
a^2-b^2
=0^2-(-1)^2
=0-1
=-1
b=-1
a^2-b^2
=0^2-(-1)^2
=0-1
=-1
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Answered by
3
a^2-b^2
=(a-b)(a+b)
={(0-(-1)} {(0+(-1)}
=
(1)(-1)
-1
=(a-b)(a+b)
={(0-(-1)} {(0+(-1)}
=
(1)(-1)
-1
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