Answer:
n • (2n - 5)
——————————————————————
5 • (n - 5) • (3n - 1)
Explanation:
4.3 Factoring 3n2 - 16n + 5
The first term is, 3n2 its coefficient is 3 .
The middle term is, -16n its coefficient is -16 .
The last term, "the constant", is +5
Step-1 : Multiply the coefficient of the first term by the constant 3 • 5 = 15
Step-2 : Find two factors of 15 whose sum equals the coefficient of the middle term, which is -16 .
-15 + -1 = -16 That's it
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -15 and -1
3n2 - 15n - 1n - 5
Step-4 : Add up the first 2 terms, pulling out like factors :
3n • (n-5)
Add up the last 2 terms, pulling out common factors :
1 • (n-5)
Step-5 : Add up the four terms of step 4 :
(3n-1) • (n-5)
Which is the desired factorization