Question

From the sum of 3x² - 4x + 2
and (-5x² + 8x - 7) subtract (-6x² +
7x-5)
please give the ans ....

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and
like ????????
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Answer 1

Step-by-step explanation:

First we have to add 3x2 − 5x + 2 and − 5x2 − 8x + 9 then from the result we have to subtract 4x2 − 7x + 9.

= {(3x2 – 5x + 2) + (- 5x2 – 8x + 9)} – (4x2 – 7x + 9)

= {3x2 – 5x + 2 – 5x2 – 8x + 9} – (4x2 – 7x + 9)

= {3x2 – 5x2 – 5x – 8x + 2 + 9} – (4x2 – 7x + 9

= {- 2x2 – 13x +11} – (4x2 – 7x + 9)

= – 2x2 – 13x + 11 – 4x2 + 7x – 9

= – 2x2 – 4x2 – 13x + 7x + 11 – 9 = – 6x2 – 6x + 2