Respuesta :

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5x^2+x−3−(−2x^3+4)


5x^2+x+−3+−1(−2x^3)+(−1)(4)


5x^2+x+−3+2x^3+−4


(2x^3)+(5x^2)+(x)+(−3+−4)


And we're left with 2x^3+5x^2+x−7
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a(b+c)=ab+ac
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5x^2+x-3+2x^3-4
group like terms
2x^3+5x^2+x-3-4
2x^3+5x^2+x-7