Question 670583
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Hi,
(8x-5) (x^2+6x) -(9x+2)(4x^2-3)= 
8x(x^2+6x)-5(x^2+6x)-9x(4x^2-3)-2(4x^2-3)] 
8x^3 + 48x^2 -5x^2 - 30x.....etc              ||finish Up, combine Like terms
 You can see the 8x^3 - 36x^3 = -28x^3