Question

4 Questions Solve


1. Simplify: (-5x2 - 8x + 7) - (5x2 - 4)

2. Simplify: (4x2 + 5x) + (x2 - 5x + 1)

3. Simplify: (-9x - 5) - (-9x2 + x - 5)

4. Simplify: (2x - 4) - (6x + 6)

Answer 1

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$<u>Question. 1$

(-5x2 - 8x + 7) - (5x2 - 4)

= -5x2 - 8x + 7 - 5x2 + 4

= -5x2 - 5x2 - 8x + 7 + 4

= -10x2 – 8x + 11

Answer - 10x2 – 8x + 11
__________________
Question. 2

(4x2 + 5x) + (x2 - 5x + 1)

= 4x2 + 5x + x2 - 5x + 1

= 4x2 + x2+ 5x - 5x + 1

= 5x2 + 0 + 1

= 5x2 + 1

Answer: 5x2 + 1
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Question. 3

(6x + 3) - (-x2 + 5x)

= -6x + 3 + x2 - 5x

= -6x - 5x + x2 + 3

= x2 – 11x + 3

Answer: x2 – 11x + 3
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Question. 4

(9x - 5) - (-9x2 + x - 5)

= -9x - 5 + 9x2 - x + 5

= 9x2 - 9x – x – 5 + 5

= 9x2 – 10x

= x(9x – 10)

Answer: x(9x – 10)


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Answer 2

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