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7 July, 23:10

Solve the equation by factoring. 5z^2-21z+4=0

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Answers (2)
  1. 8 July, 00:11
    0
    Factorise to (5z-1) (z-4) = 0

    then put 5z-1 = 0 so 5z = 1 z = 1/5

    z-4=0 z = 4

    z = 1/5 and 4
  2. 8 July, 00:35
    0
    It factors out to (5z-1) (z-4) = 0

    The solutions would be z=4 and z=1/5
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