To simplify the E×ρréššion, let's start by distributing the negative sign across the parentheses:
a²b² - ab - 2(2a²b² - 5ab + 1)
Next, distribute the negative sign to each term inside the parentheses:
a²b² - ab - 2(4a²b² - 10ab + 2)
Now, distribute the 2 to each term inside the second parentheses:
a²b² - ab - 8a²b² + 20ab - 4
Combining like terms:
(a²b² - 8a²b²) + (-ab + 20ab) - 4
-7a²b² + 19ab - 4
So, the simplified E×ρréššion is -7a²b² + 19ab - 4.