Solution - Simplification or other simple results
Step by Step Solution
Step 1 :
Equation at the end of step 1 :
((2•5a2) + 11a) + 3
Step 2 :
Trying to factor by splitting the middle term
2.1 Factoring 10a2+11a+3
The first term is, 10a2 its coefficient is 10 .
The middle term is, +11a its coefficient is 11 .
The last term, "the constant", is +3
Step-1 : Multiply the coefficient of the first term by the constant 10 • 3 = 30
Step-2 : Find two factors of 30 whose sum equals the coefficient of the middle term, which is 11 .
| -30 | + | -1 | = | -31 | ||
| -15 | + | -2 | = | -17 | ||
| -10 | + | -3 | = | -13 | ||
| -6 | + | -5 | = | -11 | ||
| -5 | + | -6 | = | -11 | ||
| -3 | + | -10 | = | -13 | ||
| -2 | + | -15 | = | -17 | ||
| -1 | + | -30 | = | -31 | ||
| 1 | + | 30 | = | 31 | ||
| 2 | + | 15 | = | 17 | ||
| 3 | + | 10 | = | 13 | ||
| 5 | + | 6 | = | 11 | That's it |
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, 5 and 6
10a2 + 5a + 6a + 3
Step-4 : Add up the first 2 terms, pulling out like factors :
5a • (2a+1)
Add up the last 2 terms, pulling out common factors :
3 • (2a+1)
Step-5 : Add up the four terms of step 4 :
(5a+3) • (2a+1)
Which is the desired factorization
Final result :
(2a + 1) • (5a + 3)
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