jcuster3762 jcuster3762
  • 07-09-2018
  • Mathematics
contestada

Subtract -2k3 + k2 - 9 from 5k3 - 3k + 7. 3k3 + k2 - 3k - 2 -7k3 + k2 + 3k - 16 7k3 - k2 - 3k + 16

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maryanna555 maryanna555
  • 07-09-2018
It’s probably wrong but I got -7-2k7
Ver imagen maryanna555
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windyyork windyyork
  • 28-06-2019

Answer: Third option is correct.

Step-by-step explanation:

Since we have given that

Subtract [tex]-2k^3 + k^2 - 9[/tex] from [tex]5k^3 - 3k + 7[/tex]

We need to find the value after subtraction:

We will write  [tex]5k^3 - 3k + 7[/tex] then , it will subtract it with  [tex]-2k^3 + k^2 - 9[/tex]

So, it becomes,

[tex]5k^3-3k+7-(-2k^3+k^2-9)\\\\=5k^3-3k+7+2k^3-k^2+9\\\\=7k^3-k^2-3k+16[/tex]

Hence, Third option is correct.

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