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katiekate95

  • 4 years ago

Can someone check my answer i got C.) please help me Solve for x in the following equation 5x^2-56=0 A.) x= -7 ; 8/5 B.)x=-7 ;8/5 C.) x=7 ;-8/5 D.)x=7;8/5

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  1. 3pwood
    • 4 years ago
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    You sure you typed the problem statement correctly? That should be x = ±sqrt(56/5)

  2. katiekate95
    • 4 years ago
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    no typed it rigth

  3. 3pwood
    • 4 years ago
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    Well, none of the answers are correct. You don't even need any fancy quadratic methods for the problem as it's given. 5x^2 - 56 = 0 5x^2 = 56 x^2 = 56/5 x = ±sqrt(56/5)

  4. 3pwood
    • 4 years ago
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    ...so roughly ±3.35

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