(4x-2×3)+(5×3-4x+5)

Remove parentheses.

4x-2×3+5×3-4x+5

Subtract 4x from 4x.

-2×3+5×3+0+5

Add -2×3+5×3 and 0.

-2×3+5×3+5

-2×3+5×3+5

Add -2×3 and 5×3.

3×3+5

Add (4x-2x^3)+(5x^3-4x+5)

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# Add (4x-2x^3)+(5x^3-4x+5)

(4x-2×3)+(5×3-4x+5)

Remove parentheses.

4x-2×3+5×3-4x+5

Subtract 4x from 4x.

-2×3+5×3+0+5

Add -2×3+5×3 and 0.

-2×3+5×3+5

-2×3+5×3+5

Add -2×3 and 5×3.

3×3+5

Add (4x-2x^3)+(5x^3-4x+5)