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Let r and s be the roots of 3x^2 + 4x -12=0. Find r^2+s^2

 Apr 30, 2022
 #1
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Step 1)  Find the two roots by using the quadratic formula.

 

Step 2)  Place the answers into the expression:  r2 + s2.

 

If you are having difficulty with this, post back with what you have tried and what your results are.

 Apr 30, 2022
 #2
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Which quadratic formula

Guest Apr 30, 2022
 #3
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Quadratic equation:  x  =  [ -b  +/-  sqrt( b2 - 4 · a · c ) ]  /  ( 2 · a )

 

In this case:  a = 3     b = 4     c = -12

 Apr 30, 2022
 #4
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The guy is asking what the answer is, just saying

Guest Apr 30, 2022
 #5
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I think the roots are 2-2sqrt10 and 2+2sqrt10

Guest Apr 30, 2022

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