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March 4, 2015

March 4, 2015

Posted by **kay** on Wednesday, January 18, 2012 at 5:45pm.

- algebra 2 -
**Reiny**, Wednesday, January 18, 2012 at 5:55pmfor 3x^2 + 2x - 7 = 0

discr = 4 -4(3)(-7) = +88

so you have real roots, both irrational

- algebra 2 -
**Damon**, Wednesday, January 18, 2012 at 5:56pmb^2-4ac

2^2 -4(3)(-7)

4 + 84 = 88 = 8*11

It tells you that there are two real roots because the discriminant is positive and that the roots will not be whole numbers because there will be a square root of 11 involved.

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