From the sum of 4x²−7x+5 and −7x²−8x+3 subtract 2x²−7x+9.
Answers
Answered by
3
Answer:
5x² + 8x + 1
Step-by-step explanation:
1 step) = (4x² - 7x + 5) + ( - 7x² - 8x + 3)
= 4x² - 7x + 5 - 7x² - 8x + 3
= 4x² - 7x² - 7x - 8x + 5 + 3
= -3x² - 15x + 8
2 step) = ( 2x² - 7x + 9 ) - ( - 3x² - 15x + 8)
= 2x² - 7x + 9 + 3x² + 15x - 8
= 2x² + 3x² - 7x + 15x + 9 - 8
= 5x² + 8x + 1
Hope it helps you..
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Answered by
3
Answer:
A/q
(4x² -7x + 5) + (- 7x² -8x +3)
=> 4x² -7x +5 -7x² -8x +3
=> 4x² -7x² -7x -8x +5 +3
=> -3x² -15x +8
Subtracting: (-3x² -15x +8) - (2x²-7x +9)
=> -3x²-15x +8 -2x² +7x -9
=> -3x²-2x²-15x +7x +8-9
=> -5x²-8x-1.
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