Question

5. Subtract x2 - X-1 from the sum of 3x2 – 8x + 11, -2x2 + 12x
and 4x2 + 17​

Answer 1

Answer:

ANSWER:

Writing the terms of the given expressions (in the same order) in the form of rows with like terms below each other and adding column-wise, we get:

    8ab-5ab    3ab  -ab

________

   5ab

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Question 2:

Add:

7x, −3x, 5x, −x, −2x

ANSWER:

Writing the terms of the given expressions (in the same order) in the form of rows with like terms below each other and adding column-wise, we get:

    7x-3x    5x  -x-2x

_____

  6x

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Question 3:

Add:

3a − 4b + 4c, 2a + 3b − 8c, a − 6b + c

ANSWER:

Writing the terms of the given expressions (in the same order) in the form of rows with like terms below each other and adding column-wise, we get:

3a - 4b + 4c2a + 3b - 8c  a - 6b +  c

___________