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kenny6666 [7]
3 years ago
8

Please help!!!!!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Dovator [93]3 years ago
4 0
Collect like terms:
You have 2 with mn so 9mn - 9mn =0
You also have 2 with m4n so -19m4n - 12m4n = -31m4n
Put it together:
-31m4n -8m2
So C
Let me know if you have any questions
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Vikki [24]
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8 0
3 years ago
Consider the polynomial operation 3x(x − 2)(5x + 2). Is the expression equivalent? Select Yes or No for A‐D.
Sav [38]

Answer:

see attached

Step-by-step explanation:

3x(x − 2)(5x + 2)

  • (x − 2)(5x + 2) expand
  • 5x² - 8x - 4
  • 3x ( 5x² - 8x - 4)  expand
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3 years ago
How do you add with a negative number?
Cloud [144]
You just subtract the number
4 0
2 years ago
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nordsb [41]
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5 0
2 years ago
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(04.02 MC)<br> Solve the system of equations.<br> 5x + y = 9<br> 3x + 2y = 4
goblinko [34]

Answer:

(2,-1)

Step-by-step explanation:

Multiply first equation by 2:

10x + 2y = 18

Subtract the second equation from this so that the 2y terms cancel:

10x - 3x = 18 - 4

7x = 14

x = 2

Plug into first equation to find y:

5(2) + y = 9

10 + y = 9

y = -1

The answer is (2,-1)

7 0
3 years ago
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