Answer:
-27
10x +8.
Explanation:
x² - 9 ÷ x² - 4x - 5
=x²+5x+4 x² - 2x - 15
x² - 9 × x² - 2x - 15
=x² +5x +4 x² - 4x - 5
-9 × 3
=5x. 4. 2
-27.
=10x + 8 .
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