What is the expression in factored form?
How can you make a table to find factors?
Use the first row to list sets of factors of the constant. Use the second row to find the sum of each set of factors.
Step 1 Find factors of 20 with sum 9.
Since both 20 and 9 are positive, both factors are positive.
Factors of 20 | 1, 20 | 2, 10 | 4, 5 |
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Sum of factors | 21 | 12 | 9 |
Step 2 Use the factors you found. Write the expression as the product of two binomials.
Step 1 Find factors of
Since
Since
Factors of
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Sum of factors | 71 | 34 | 21 | 14 | 6 | 1 |
Will factoring out
No; because the final factored expression will include
Step 1 Rewrite the expression to show a trinomial with leading coefficient 1.
Step 2 Find factors of 12 with sum
Since
Since
Factors of 12 |
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Sum of factors |
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