What values of x satisfy x23+x13-2≤0?
Explanation:
x23+x13-2≤0 ...(1)
Put y = x1/3
Then equation (1) becomes y2 + y – 2 ≤ 0
(y + 2)(y – 1) ≤ 0
–2 ≤ y ≤ 1
-2≤x13≤1
–8 ≤ x ≤ 1
Hence, option (a).
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