Question

(a-b)-(b-x);(2x+6y)+(x-3y);(3a+4b)-(2a+3b);x-(3x+5)+(2x-4);(5a+3)+(-2a^2+a+7);(3a^2+7a-5)-(3a^2+1);(4x^2-2y+1)-(-5+6y-4x^2);(a^3-2b-1)-(1-b+a^3) помогите

Answer 1

Ответ:

-b-2

Объяснение:

Ну вроде верно, считал на калькуляторе.

Answer 2

1) (a-b)-(b-x): (a-b) - (b-x) = a - b - b + x = a - 2b + x

2) (2x+6y)+(x-3y): (2x+6y) + (x-3y) = 2x + x + 6y - 3y = 3x + 3y

3) (3a+4b)-(2a+3b): (3a+4b) - (2a+3b) = 3a - 2a + 4b - 3b = a + b

4) x-(3x+5)+(2x-4): x - (3x+5) + (2x-4) = x - 3x - 5 + 2x - 4 = -2x - 9

5) (5a+3)+(-2a^2+a+7): (5a+3) + (-2a^2+a+7) = 5a + 3 - 2a^2 + a + 7 = -2a^2 + 6a + 10

6) (3a^2+7a-5)-(3a^2+1): (3a^2+7a-5) - (3a^2+1) = 3a^2 + 7a - 5 - 3a^2 - 1 = 7a - 6

7) (4x^2-2y+1)-(-5+6y-4x^2): (4x^2-2y+1) - (-5+6y-4x^2) = 4x^2 - 2y + 1 + 5 - 6y + 4x^2 = 8x^2 - 8y + 6

8) (a^3-2b-1)-(1-b+a^3): (a^3-2b-1) - (1-b+a^3) = a^3 - 2b - 1 - 1 + b - a^3 = -b - 2