2) Solve: (m + 3) (m - 3) = 40
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Step-by-step explanation:
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Answer:
we have to find m
Step-by-step explanation:
(m +3)( m - 3) =40
m² - 3m +3m - 9 =40 [-3m+3m =0]
m² - 9 =40
m² = 40+9
m² = 49
m² =7²
m=7
Hope it helps :-
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