Quandaries
and Queries |
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hi, how do you solve 3x ^{2} + x - 2 = 0from Lizzey Yr 10, |
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Hi Lizzy, The first step in solving this equation is to factor the quadratic 3x
where there are two terms missing. These two missing terms must multiply together to give the constant term -2. Thus the two missing terms are plus or minus 2 and plus or minus 1. Thus, if a factorization exists it must be one of
Expand each one and see if you get a middle term of x. Penny |