Answer:8x^2-8x-13
Explanation:
(3x^2+5x-8)+(5x^2-13x-5)
Removing brackets
3x^2+5x-8+5x^2-13x-5
Collect like terms
3x^2+5x^2+5x-13x-8-5
8x^2-8x-13
Answer:
8x2 - 8x -13
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