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2x^3=3x^2    How would you calculate this?? Hur skulle du räkna ut detta??

 Aug 21, 2015

Best Answer 

 #2
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2×x3=3×x2{x=32x=0}{x=1.5x=0}

Normal and cool

 Aug 21, 2015
 #1
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2x^3=3x^2    rewrite   as

 

2x^3  - 3x^2  = 0     factor

 

x^2 (2x - 3)  = 0       set both factors to 0.....and we have.....

 

x^2  = 0                                              and                            2x - 3 = 0

 

take the square root of both sides                                          add 3 to both sides

 

x = 0                                                                                    2x = 3

 

                                                                                          divide both sides by 2

 

                                                                                             x = 3/2

 

So.....the two solutions are   x = 0 aand x = 3/2

 

 

 Aug 21, 2015
 #2
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+5
Best Answer

2×x3=3×x2{x=32x=0}{x=1.5x=0}

Normal and cool

Guest Aug 21, 2015

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