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Find the discriminant of the quadratic $5x^2 - 2x + 8 - 3x^2 + 8x + 12.$

 Nov 15, 2023
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Find the discriminant of the quadratic $5x^2 - 2x + 8 - 3x^2 + 8x + 12.$  

 

                                                              5x2 – 2x + 8 – 3x2 + 8x + 12   

 

Combine like terms                                2x2 + 6x + 20  

 

When in the form ax2 + bx + c the discriminant is b2 – 4ac  

 

                                                               62 – (4)(2)(20)  

 

                                                               36 – 160  

 

                                                               –124 is the discriminant  

.

 Nov 16, 2023

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