Nikky C.

asked • 08/22/14

Simplify the expresions and solve the equations

1. z2 - 3z+2 over z+ 3z-4 multiplied by z+ 6z+8 over z2 -4 all of this equals to z
 
2. 2h-2h-4 over (h+1)(h-2) plus h+ h-2 over (h+2)(h+1)

3 Answers By Expert Tutors

By:

Pierce O. answered • 08/22/14

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Harvey F.

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In the 2nd problem when you get 2*(h-2)/(h-2) + (h-1)/(h+1),
it seems the first expression can cancel the (h-2)/(h-2)
to leave 2 + (h-1)/(h+1) then adding to get (h+1)/(h+1) which also reduces to 
1 as the final answer to simplifying of the expression.
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08/22/14

SURENDRA K. answered • 08/22/14

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Pierce O.

Careful, if z = 1, the first term becomes 0/0
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08/22/14

SURENDRA K.

Yes, Pierce
I agree with you.
Thanks
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08/22/14

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