Question

(x²-3x+1)+(-x²+x-1)-(1-3x-x²)

Answer 1

х²+х-1

Объяснение:

(x²-3x+1)+(-x²+x-1)-(1-3x-x²)=х²-3х+1-х²+х-1-1+3х+х²

Answer 2

Ответ:      

(x2−3x+1)+(−x2+x−1)−(1−3x−x2)=

x2−3x+1+(−x2+x−1)−(1−3x−x2)=

x2−3x+1−x2+x−1−(1−3x−x2)=

−2x−(1−3x−x2)=

−2x−1+3x+x2=

x−1+x2

Answer 3

To simplify the expression (x²-3x+1)+(-x²+x-1)-(1-3x-x²), let's break it down into smaller parts and combine like terms:

(x² - 3x + 1) + (-x² + x - 1) - (1 - 3x - x²)

First, let's simplify the expression within the parentheses:

(x² - 3x + 1) + (-x² + x - 1) - (1 - 3x - x²) = x² - 3x + 1 - x² + x - 1 - 1 + 3x + x²

Now, let's group the like terms:

(x² - x²) + (-3x + x + 3x) + (1 - 1 - 1) = 0 + (-3x + x + 3x) + 0

Simplifying further:

0 + (-3x + x + 3x) + 0 = -3x + x + 3x = (x - 3x + 3x) = x

Therefore, the simplified expression is x.