Question

(5x + 2y)b + (3x – 2b)y – (5b – y)x, если x = 7; y = – 5; b = – 2

Answer 1

Ответ:

-200

Пошаговое объяснение:

получаем пример:

(5*7+2*(-5))*(-2)+(3*7-2*(-5))*(-5)-(5*(-2)-(-5))=

=(35-10)*(-2)+(21+10)*(-5)-(-10+5)= -50-155+5= -200

Answer 2

To evaluate the expression (5x + 2y)b + (3x - 2b)y - (5b - y)x with the given values x = 7, y = -5, and b = -2, follow these steps:

1. Substitute the values of x, y, and b into the expression: = (5 * 7 + 2 * -5)(-2) + (3 * 7 - 2 * -2)(-5) - (5 * -2 - (-5))(7)

2. Perform the calculations inside the parentheses: = (35 - 10)(-2) + (21 + 4)(-5) - (-10 + 5)(7) = 25 * -2 + 25 * -5 - 5 * 7 = -50 - 125 - 35 = -210

Therefore, when x = 7, y = -5, and b = -2, the value of the expression is -210.