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Mathematics
Dalton Keller
16 February, 21:27
How is 27x^2-57x+14 factored
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Raiden Ford
16 February, 22:07
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Answer: (3✖️ - 7) (9✖️ + 2)
Step-by-step explanation:
3^3 ✖️^2 - 57✖️) - 14
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Trace Bullock
16 February, 22:52
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27x2-57x-14
Final result:
(3x - 7) • (9x + 2)
Step by step solution:
Step 1:
Equation at the end of step 1:
(33x2 - 57x) - 14
Step 2:
Trying to factor by splitting the middle term
2.1 Factoring 27x2-57x-14
The first term is, 27x2 its coefficient is 27.
The middle term is, - 57x its coefficient is - 57.
The last term, "the constant", is - 14
Step-1 : Multiply the coefficient of the first term by the constant 27 • - 14 = - 378
Step-2 : Find two factors of - 378 whose sum equals the coefficient of the middle term, which is - 57.
-378 + 1 = - 377
-189 + 2 = - 187
-126 + 3 = - 123
-63 + 6 = - 57 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, - 63 and 6
27x2 - 63x + 6x - 14
Step-4 : Add up the first 2 terms, pulling out like factors:
9x • (3x-7)
Add up the last 2 terms, pulling out common factors:
2 • (3x-7)
Step-5 : Add up the four terms of step 4:
(9x+2) • (3x-7)
Which is the desired factorization
Final result:
(3x - 7) • (9x + 2)
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