Please factor by grouping. Show work 12x^3+2x^2-30x-5

1 answer:

7 0

12x³ + 2x² - 30x - 5
2x²(6x) + 2x²(1) - 5(6x) - 5(1)
2x²(6x + 1) - 5(6x + 1)
(2x² - 5)(6x + 1)

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viva [34]

Answer:

Step-by-step explanation:

3 0

2 years ago

Alex

Answer:

$\huge\boxed{18,475}$

Step-by-step explanation:

The terms of this sum make the arithmetic sequence.

The fomula of a sum of <em>n</em> terms of an arithmetic sequence:

$S_n=\dfrac{[2a_1+(n-1)d]\cdot n}{2}$

We have

$a_1=2\\d=17-2=32-12=47-32=15\\n=50$

Substitute:

$S_{50}=\dfrac{[2\cdot2+(50-1)\cdot15]\cdot50}{2}=(4+49\cdot15)\cdot25=(4+735)\cdot25\\\\=739\cdot25=18,475$

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3 years ago

fgiga [73]

W-18 is the answer hope it helps

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3 years ago

GrogVix [38]

122222222222233272727722828828282838388383

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2 years ago

ryzh [129]

Yes it is 1210.428571

6 0

3 years ago