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AnimeBrainly
(3x² + 8x - 7) - (5x² + 2x - 11) = -2x² + 6x + 4

-2x² + 6x + 4 is your answer

hope this helps

Note: 2 negatives = 1 positive
-7 - (- 11) = -7 + 11 = 4
(3x^2 + 8x - 7) - (5x^2 + 2x - 11) 
= 3x^2 + 8x - 7 - 5x^2 - 2x + 11 
= (3x^2 - 5x^2) + (8x - 2x) + (11-7) 
= -2x^2 + 6x + 4

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