Asked by Marysvoice

Which is the easiest way to figure a quadratic equation; graphing, quadratic formula, completing a square and factoring?
Answered by drwls
Quadratic formula, unless it can be factored easily by inspection. Graphing takes too long, but is sometimes the only convenient way to solve cubic and higher order equations.
Answered by atul
find the number which when increased by 30% becomes 39
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