Solution - Simplification or other simple results
Step by Step Solution
Step 1 :
Equation at the end of step 1 :
(7x2 - 9x) + 2
Step 2 :
Trying to factor by splitting the middle term
2.1 Factoring 7x2-9x+2
The first term is, 7x2 its coefficient is 7 .
The middle term is, -9x its coefficient is -9 .
The last term, "the constant", is +2
Step-1 : Multiply the coefficient of the first term by the constant 7 • 2 = 14
Step-2 : Find two factors of 14 whose sum equals the coefficient of the middle term, which is -9 .
| -14 | + | -1 | = | -15 | ||
| -7 | + | -2 | = | -9 | That's it |
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -7 and -2
7x2 - 7x - 2x - 2
Step-4 : Add up the first 2 terms, pulling out like factors :
7x • (x-1)
Add up the last 2 terms, pulling out common factors :
2 • (x-1)
Step-5 : Add up the four terms of step 4 :
(7x-2) • (x-1)
Which is the desired factorization
Final result :
(x - 1) • (7x - 2)
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