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May 3, 2015

Homework Help: 8th grade algebra: radicals

Posted by jenna on Friday, May 6, 2011 at 11:43pm.

please help me solve these

1. 2√5/8 + 4√3/8 - 1/2√68

2. √4k-5 +1=8
(the radical sign goes over 4k-5)

3. (x+4)*2 /3 =8

4. Write the value of the discriminant of each equation. Then use it to decide how many different real-number roots the equation has.
x*2-6x+2=0

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