Question:

Simplify more? 10 pts best answer.?

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{-2 +/- sqrt(4-(-84))}/6

I know its possible, but I cannot figure it out.

I still need it with the sqrt sign. I cannot have any decimals in my answer.

Thanks

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  1. {-2 +/- sqrt(4-(-84))}/6

    = [ - 2 +/- sqrt(4 + 84) ] / 6

    = [ - 2 +/- sqrt(88) ] / 6

    = [ - 2 +/- sqrt(4 * 22) ] / 6

    = [ - 2 +/- sqrt(4) sqrt(22) ] / 6

    = [ - 2 +/- 2 sqrt(22) ] / 6

    = 2[ - 1 +/- sqrt(22) ] / 6

    = [ - 1 +/- sqrt(22) ] / 3.

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