gooberjaiden gooberjaiden

21-06-2017
Mathematics

contestada

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

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matthewcooke23 matthewcooke23

21-06-2017

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

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evil123toothpick evil123toothpick

21-06-2017

It factors out to (5z-1)(z-4)=0
The solutions would be z=4 and z=1/5

Answer Link

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