Fill in the blanks to complete the polynomial equation that shows the subtraction of the second expression from the first and the resulting difference. (2 points)

  9x2
+ x + 13
– 2x2
+ 12x
+
  x2
+ 5x
+ 2

1 answer

To fill in the blanks for the polynomial equation that shows the subtraction of the second expression from the first, we can proceed step-by-step with the given expressions.

The first expression is: \( 9x^2 + x + 13 \)

The second expression to subtract is: \( 2x^2 + 12x + __ \)

The third expression is: \( x^2 + 5x + 2 \)

We need to subtract the second and third expressions from the first expression:

  1. Combine the second and third expressions for subtraction. Let's first evaluate:

\[ 2x^2 + 12x + (x^2 + 5x + 2) = 2x^2 + 12x + x^2 + 5x + 2 = (2x^2 + x^2) + (12x + 5x) + 2 \]

This results in: \[ 3x^2 + 17x + 2 \]

  1. Now we perform the subtraction from the first expression:

\[ 9x^2 + x + 13 - (3x^2 + 17x + 2) \]

Distributing the negative sign, we have: \[ 9x^2 + x + 13 - 3x^2 - 17x - 2 \]

  1. Now combine like terms:
  • For \(x^2\): \(9x^2 - 3x^2 = 6x^2\)
  • For \(x\): \(x - 17x = -16x\)
  • For the constant term: \(13 - 2 = 11\)

The resulting difference is: \[ 6x^2 - 16x + 11 \]

  1. So, the blanks can be filled with:
  • The second expression gives us a missing constant term: \(2\)
  • The resulting polynomial from the subtraction is: \(6x^2 - 16x + 11\)

Thus, putting it all together, the complete polynomial equation can be represented as:

\[ 9x^2 + x + 13 - (2x^2 + 12x + 2) = 6x^2 - 16x + 11 \]

Completion of the statement:

  • The blank for the second expression is 2, and based on the subtraction and combination, the resulting difference is 6x² - 16x + 11.
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