Question

Procedimiento plis

1. (2x³+5x-3)-(2x³-3x²+x)

2. (4x²-1)-(x²+2)

3. (4x²-1)+(x³-3x²+6x-2)

4.2(4x²-1)-(6x²+x+1)​

Answer 1

1.

$(2x^3+5x-3)-(2x^3-3x^2+x)\\= 2x^3+5x-3-2x^3+3x^2-x\\=2x^3-2x^3+3x^2+5x-x-3\\=3x^2+4x-3$

2.

$(4x^2-1)-(x^2+2)\\=4x^2-1-x^2-2\\=4x^2-x^2-1-2\\=3x^2-3$

3.

$(4x^2-1)+(x^3-3x^2+6x-2)\\=4x^2-1+x^3-3x^2+6x-2\\=x^3+4x^2-3x^+6x-1-2\\=x^3+x^2+6x-3$

4.

$2(4x^2-1)-(6x^2+x+1)\\=8x^2-2-6x^2-x-1\\=8x^2-6x^2-x-2-1\\=2x^2-x-3$