The expression X² + 9x + 20 is a quadratic expression. To simplify it further, you can factor the expression.
To factor the expression, you need to find two numbers whose sum is 9 and whose product is 20.
The factors of 20 are 1, 2, 4, 5, 10, and 20.
Among these factors, the pair of numbers that has a sum of 9 is 4 and 5.
Therefore, the expression X² + 9x + 20 can be factored as (X + 4)(X + 5).
X²+9x+20
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