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

User Victor Rodrigues
by
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2 Answers

5 votes
It factors out to (5z-1)(z-4)=0
The solutions would be z=4 and z=1/5
User Sarower Jahan
by
8.4k points
3 votes
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
User Atsumi
by
7.8k points
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