Split the middle term 4n square + 5n - 636
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= 4n² + 5n - 636
= 4n² + (53-48)n - 636
= 4n² + 53n - 48n - 636
= n(4n + 53) - 12(4n + 53)
= (n - 12)(4n + 53)
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1
Answer:
you can solve it by dharacharyas nethod
n=-5+√25-4*4*636/2*4
-5+√25-10176/8
-5+√10150
n=13.09
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