Question

-х-х=+или-2х ???????????

Answer 1

-2x

это при умножении - на - дает +

Answer 2

-х-х=-2х

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Answer 3

To solve the equation "-х-х=+или-2х," let's simplify it step by step:

1. Start with the original equation: -х - х = ±2х

2. Combine like terms on the left side of the equation: -2х = ±2х

3. Now, we want to isolate x on one side of the equation. Let's move all terms containing x to one side and constants to the other side: -2х - ±2х = 0

4. Combine the x terms on the left side: -2х + 2х = 0

The x terms cancel each other out, leaving us with:

0 = 0

This equation is an identity, which means it is true for all values of x. In this case, any value of x would satisfy the original equation "-х-х=+или-2х."