Solution - Simplification or other simple results
Step by Step Solution
Step 1 :
Equation at the end of step 1 :
(2x2 + 11x) + 5
Step 2 :
Trying to factor by splitting the middle term
2.1 Factoring 2x2+11x+5
The first term is, 2x2 its coefficient is 2 .
The middle term is, +11x its coefficient is 11 .
The last term, "the constant", is +5
Step-1 : Multiply the coefficient of the first term by the constant 2 • 5 = 10
Step-2 : Find two factors of 10 whose sum equals the coefficient of the middle term, which is 11 .
-10 | + | -1 | = | -11 | ||
-5 | + | -2 | = | -7 | ||
-2 | + | -5 | = | -7 | ||
-1 | + | -10 | = | -11 | ||
1 | + | 10 | = | 11 | That's it |
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, 1 and 10
2x2 + 1x + 10x + 5
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (2x+1)
Add up the last 2 terms, pulling out common factors :
5 • (2x+1)
Step-5 : Add up the four terms of step 4 :
(x+5) • (2x+1)
Which is the desired factorization
Final result :
(2x + 1) • (x + 5)
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