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Zina [86]
2 years ago
7

Which expression is equivalent to 3m+1-m? 2+m-1+m 1+m 3m-1 3m

Mathematics
1 answer:
kirill115 [55]2 years ago
6 0

Answer:

  2+m-1+m

Step-by-step explanation:

By combining like terms, the given expression and the above answer both simplify to ...

  2m+1

___

The other available choices do not.

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4(5x + 9)^2 – 33 = -21
ozzi

Answer:

x = sqrt(3)/5 - 9/5 or x = -9/5 - sqrt(3)/5

Step-by-step explanation by completing the square:

Solve for x over the real numbers:

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Add 33 to both sides:

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Subtract 9 from both sides:

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Subtract 9 from both sides:

x = sqrt(3)/5 - 9/5 or 5 x = -9 - sqrt(3)

Divide both sides by 5:

Answer:  x = sqrt(3)/5 - 9/5 or x = -9/5 - sqrt(3)/5

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