Simplify ( a+3 ) ( a-3 )
1 point
a² - 3
a² - 9
a² + 9
None of these
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Answer:
a^- 9 third option is correct
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Answer: ( a+3 ) ( a-3 ) = a²-9
It is according to identity,
(a+b) (a-b) = a² - b²
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