7+5x^2 X^3 3+1 4x^3 7x^2

请输入您的数学问题…… 7+5x^2 -x^3 -3+1-4x^3 -7x^2

问题

7 + 5 x^{2} - x^{3} - 3 + 1 - 4 x^{3} - 7 x^{2}

Verification required

Please type the verification code shown