(6×2+10x-1)+(-5×2-2x+1)

Remove parentheses.

6×2+10x-1-5×2-2x+1

Add -1 and 1.

6×2+10x-5×2-2x+0

Add 6×2+10x-5×2-2x and 0.

6×2+10x-5×2-2x

6×2+10x-5×2-2x

Subtract 5×2 from 6×2.

x2+10x-2x

Subtract 2x from 10x.

x2+8x

Add (6x^2+10x-1)+(-5x^2-2x+1)

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# Add (6x^2+10x-1)+(-5x^2-2x+1)

(6×2+10x-1)+(-5×2-2x+1)

Remove parentheses.

6×2+10x-1-5×2-2x+1

Add -1 and 1.

6×2+10x-5×2-2x+0

Add 6×2+10x-5×2-2x and 0.

6×2+10x-5×2-2x

6×2+10x-5×2-2x

Subtract 5×2 from 6×2.

x2+10x-2x

Subtract 2x from 10x.

x2+8x

Add (6x^2+10x-1)+(-5x^2-2x+1)