Explicación paso a paso:
1) (x²+1)+(2x-3)=
x² + 1 + 2x -3
x²-2+2x
x²+2x-2
2) (x²+1)-(2x-3)=
x² + 1 - 2x + 3
x²+4-2x
x²-2x+4
3)(x²+1)*(2x-3)=
x²×2x-3x²+2x-3
2x³-3x²+2x-3
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Explicación paso a paso:
1) (x²+1)+(2x-3)=
x² + 1 + 2x -3
x²-2+2x
x²+2x-2
2) (x²+1)-(2x-3)=
x² + 1 - 2x + 3
x²+4-2x
x²-2x+4
3)(x²+1)*(2x-3)=
x²×2x-3x²+2x-3
2x³-3x²+2x-3