Quote:
Originally Posted by mystic87
Sorry for the miscalculation for this q. But can someone explain why #1 shouldn't be 4*5*5*5*4 if it's asking for "divisible by 2 or 5 or both?"
Can someone remind me the shortcut to simplify 3N^2 - 11n - 4 to get n= 4 or -1/3? I know this is highschool math...but it's been a few years and i really can't remember.
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Use the Quadratic Formula:
plug in 3=a, b=-11, c=-4
Hope this helps!