Question

-2(3x-5)+5(2-4x) Варіанти відповідей: 1)-20+26x; 2)20-26x; 3)-26; 4)20.

Answer 1

–2(3х–5) + 5(2–4х) = –6х+10+10–20х = –26х+20 = 20–26х

Відповідь: 2) 20–26х

Answer 2

To simplify the expression -2(3x - 5) + 5(2 - 4x), follow the order of operations (PEMDAS):

1. Distribute the coefficients inside the parentheses: -2 * 3x + (-2) * (-5) + 5 * 2 + 5 * (-4x)

2. Multiply the coefficients: -6x + 10 + 10 - 20x

3. Combine like terms: -6x - 20x + 10 + 10

4. Combine constants: -26x + 20

So the simplified expression is -26x + 20.

Among the given options, the correct answer is 2) 20 - 26x.