(x cube- 2 x^ + 3 x+ 5)+(2x cube+2x^-3x+10)
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Answer:
=x^3-2x+3x+5+4x^3+2x-3x+10
=x^3+4x^3-2x+2x+3x-3x+5+10
=5x^3+15
-15/5=x^3
-3=x^3
27=x
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