Question

Q5. From the sum of 3x² - 5x + 2 and - 5*2 – 8x + 6 subtract 4x2 - 9x + 7.
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Answer 1

Answer:

Rearranging and collecting the like terms: (3-5)x2 + (− 5-8)x + 2 +6 = -2x2 − 13x + 8. Subtract 4x2 − 9x + 7 ...

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Answer 2

Answer:

Sum of 3x

2

−5x+2 and −5x

2

−8x+6

=(3x

2

−5+2)+(−5x

2

−8x+6)

Rearranging and collecting the like terms, we get:

=3x

2

−5x

2

−5x−8x+2+6

=(3−5)x

2

−(5−8)x+2+6

=−2x

2

−13x+8

Now Subtract 4x

2

−9x+7 from −2x

2

−13x+8

(−2x

2

−13x+8)−(4x

2

−9x+7)

=−2x

2

−13x+8−4x

2

+9x−7

=−2x

2

−13x+8−4x

2

−9x−7

Rearranging and collecting the like terms, we get:

=−2x

2

−4x

2

−13x−9x+8−7

=(−2−4)x

2

−(13+9)x+8−7

=−6x

2

−4x+1