Solution - Simplification or other simple results
Other Ways to Solve:
Step by Step Solution
Step 1 :
Trying to factor by splitting the middle term
1.1 Factoring x2+12x+20
The first term is, x2 its coefficient is 1 .
The middle term is, +12x its coefficient is 12 .
The last term, "the constant", is +20
Step-1 : Multiply the coefficient of the first term by the constant 1 • 20 = 20
Step-2 : Find two factors of 20 whose sum equals the coefficient of the middle term, which is 12 .
| -20 | + | -1 | = | -21 | ||
| -10 | + | -2 | = | -12 | ||
| -5 | + | -4 | = | -9 | ||
| -4 | + | -5 | = | -9 | ||
| -2 | + | -10 | = | -12 | ||
| -1 | + | -20 | = | -21 | ||
| 1 | + | 20 | = | 21 | ||
| 2 | + | 10 | = | 12 | That's it |
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, 2 and 10
x2 + 2x + 10x + 20
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (x+2)
Add up the last 2 terms, pulling out common factors :
10 • (x+2)
Step-5 : Add up the four terms of step 4 :
(x+10) • (x+2)
Which is the desired factorization
Final result :
(x + 10) • (x + 2)
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