who will answer my questions 9 and 10 explain it I will brainliest it
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Answer:
9. -10 - y + 27
10. 10 + x + 4x^2
Step-by-step explanation:
9. [(3x + 2y + 11) + (-y + 13)] - (13x + 2y - 3)
= 3x + 2y + 11 - y + 13 - (13x + 2y - 3)
= 3x + y + 24 - (13x + 2y - 3)
(3x + y + 24) - (13x + 2y - 3)
= 3x + y + 24 - 13x - 2y + 3
= -10x - y + 27
10. [(3 + 4x) + (5x^2 + 7x + 11)] - [(3 + 9x) + (x^2 + x + 1)]
= (3 + 4x + 5x^2 + 7x + 11) - (3 + 9x + x^2 + x + 1)
= (14 + 11x + 5x^2) - (4 + 10x + x^2)
= 14 + 11x + 5x^2 - 4 - 10x - x^2
= 10 + x + 4x^2
Hope it helps...
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