Algebra-1

First, factor the quadratic trinomial -x² - 5x + 6.

We can rewrite it as -(x² + 5x - 6).

Now factor x² + 5x - 6. We need to find two numbers that multiply to -6 and add up to 5.

The factors of 6 are: 1, 2, 3 and 6.

We need to find two numbers whose sum is 5. The numbers are -1 and 6 becaus...