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What must be added to 5x- 2x2 + 6x - 7 to make the sum x3 + 3x2 - x + 1 ?

  • a)
    4x3−5x2+7x+6

  • b)
    4x3+5x2−7x+6

  • c)
    −4x+ 5x− 7x + 8

  • d)
    None of these

Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
What must be added to 5x3- 2x2+ 6x - 7 to make the sum x3+ 3x2 - x + 1...
Statement for the Expression 3mn + 5a

The statement for the expression 3mn + 5a is:

Number 5 added to 3 times the product of m and n.

Explanation:

- The expression 3mn represents the product of 3, m, and n.
- The expression 5a represents the product of 5 and a.
- To write a statement for this expression, we need to simplify it first by adding 5a to 3mn.
- The simplified expression is: 3mn + 5a.
- To write a statement for this expression, we need to identify what it represents.
- The expression 3mn represents the product of 3, m, and n.
- The expression 5a represents the product of 5 and a.
- Therefore, the expression 3mn + 5a represents the sum of the product of 3, m, and n, and the product of 5 and a.
- To write a statement for this expression, we need to add 5 to this sum.
- The final statement is: Number 5 added to 3 times the product of m and n.

In summary, the statement for the expression 3mn + 5a is "Number 5 added to 3 times the product of m and n."
Community Answer
What must be added to 5x3- 2x2+ 6x - 7 to make the sum x3+ 3x2 - x + 1...
Option (c) says :-

The no. 5 is added to 3 times the product of m and n, which means - 3(mn)+5

When a no. or another variable is written together without sign, it means you have to multiply.

So in this question 3(mn)+5 means the product [answer] of m and n is multiplied to 3 and 5 is added.
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What must be added to 5x3- 2x2+ 6x - 7 to make the sum x3+ 3x2 - x + 1 ?a)4x3−5x2+7x+6b)4x3+5x2−7x+6c)−4x3+ 5x2− 7x + 8d)None of theseCorrect answer is option 'C'. Can you explain this answer?
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