anonymous
  • anonymous
help pls Multiply and Simplify (z3-64) / (z2-5z+4) * (2z2+9z-11) / (5z2+20z+80)
Mathematics
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anonymous
  • anonymous
help pls Multiply and Simplify (z3-64) / (z2-5z+4) * (2z2+9z-11) / (5z2+20z+80)
Mathematics
katieb
  • katieb
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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dumbcow
  • dumbcow
try to factor each part, then you can cancel
dumbcow
  • dumbcow
\[z^{3}-64 = z^{3} -4^{3} = (z-4)(z^{2}+4z+16)\] \[z^{2}-5z+4 = (z-4)(z-1)\] \[2z^{2}+9z-11 = (2z+11)(z-1)\] \[5z^{2}+20z+80 = 5(z^{2}+4z+16)\]
anonymous
  • anonymous
so then do I cancel out the ones that are the same

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dumbcow
  • dumbcow
yes since you are multiplying, if same term is both on top and bottom they cancel
anonymous
  • anonymous
leaving (2z+11) / 5
dumbcow
  • dumbcow
correct
anonymous
  • anonymous
woo hoo thank you
dumbcow
  • dumbcow
:)

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