Question

I.
resolver las siguientes adiciones
1. 3a + 2b-c con 2a + 3b + c
2. x4 - 3x2 + 2 con 5x4 + 12x2 - 3x + 5
3. 3x2 - 4xy + y2,- 5xy +6x? - 3y2;-by? - 8xy - 9x2
4.
5,2 - 3ab
con
a а
1
+
6
ab
3
2
5. Si P = x2 + 3x - 2 y Q = 2x2 - 5x + 7, obtener P + Q.​

Answer 1

Respuesta:

Explicación:

1.-  (5a + 5b)

2.................

3.-  17xy - 8y^2

4.................

5.-(P -Q)+R

P - Q = [(x)^2 - (2x)^2] + [3x - (-5x)] + [(-2) - 7] = -(x)^2 + 8x - 9

(P - Q) + R = [-x^2] + [8x + x] + [-9 + (-9)]  

(P - Q) + R = -x^2 + 9x - 18

2)(P × Q) - R

(P x Q) = [x^2 * (2x)^2] + [x^2 * (-5x)] + [x^2 * 7] + [3x * (2x)^2] + [3x * (-5x)] + [3x * 7] + [(-2) * (2x)^2] + [(-2) * (-5x)] + [(-2) * (7)]

(P x Q) = 2(x)^4 + (-5)x^3 + 7x^2 + 6x^3 + (-15)x^2 + 21x + (-4)x^2 + 10x - 14

(P x Q) = 2x^4 + x^3 - 12x^2 + 31x - 14

(P x Q) - R = [2x^4] + [x^3] + [-12x^2] + [31x - x] + [-14 - (-2)]

(P x Q) - R = 2x^4 + x^3 - 12x^2 + 30x - 12

3)Q ÷ R

          3x^2 - 4xy + y^2

          6x^2 - 5xy - 3y^2

        - 9x^2 - 8xy - 6y^2

=          0x^2 - 17xy - 8y^2