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vodomira [7]
3 years ago
5

Hello ! I need a solution for this exercise: either 1≤x≤2 and let A = -3 + 8 / (x + 1) -2x² Show that -9≤A≤-1

Mathematics
1 answer:
Phantasy [73]3 years ago
6 0
\left[A \right] = \left[ \frac{ - \left( 5 - 3\,x - 2\,x^{2} - 2\,x^{3}\right) }{-1-x}\right][A]=[​−1−x​​−(5−3x−2x​2​​−2x​3​​)​​] I hope helping this answer
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