(2×2-4x+1)+(5x+x2-1)

Remove parentheses.

2×2-4x+1+5x+x2-1

Subtract 1 from 1.

2×2-4x+5x+x2+0

Add 2×2-4x+5x+x2 and 0.

2×2-4x+5x+x2

2×2-4x+5x+x2

Add 2×2 and x2.

3×2-4x+5x

Add -4x and 5x.

3×2+x

Add (2x^2-4x+1)+(5x+x^2-1)

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# Add (2x^2-4x+1)+(5x+x^2-1)

(2×2-4x+1)+(5x+x2-1)

Remove parentheses.

2×2-4x+1+5x+x2-1

Subtract 1 from 1.

2×2-4x+5x+x2+0

Add 2×2-4x+5x+x2 and 0.

2×2-4x+5x+x2

2×2-4x+5x+x2

Add 2×2 and x2.

3×2-4x+5x

Add -4x and 5x.

3×2+x

Add (2x^2-4x+1)+(5x+x^2-1)