Algebra-2

To factor the expression

we need to identify two numbers that multiply to 21 (the constant term) and add up to -10 (the coefficient of x).

Step 1: Identify pairs of factors of 21

The pairs of factors of 21 are:

1 and 21

3 and 7

Step 2: Choose the correct pair

We are looking for a pair that adds up to -10:

The pair that works is -3 and -7(since -3 + (-7) = -10 ).

Step 3: Write the factored form

Thus, we can factor the expression as:

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