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Algebra2

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Making Sure these are right?
absolute value:
1.|7x+2|=10
x=1.1 x=1.7

2.|3x-5|=-1
x=1.3 x=2

  • Algebra2 -

    1. Eliminate the absoulute value :

    7 x + 2 = 10

    7 x + 2 = - 10
    _________________

    7 x + 2 = 10

    7 x = 10 - 2 = 8

    x = 8 / 7


    7 x + 2 = - 10

    7 x = - 10 - 2 = - 12


    x = - 12 / 7


    Solutions x = 8 / 7 aprox. 1.14 and x = - 12 / 7 aprox. - 1.71


    2.Eliminate the absoulute value :

    Absolute value can't be negative.

    No solutions exist.

  • Algebra2 -

    So if the absolute vale equals a negative number there is no solution?
    Such as:
    |x^2+2x+1|=-4
    So, that has no solution?

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