Question

If x = −1 × −1 × −1 × −1 × ... 55 times, y = −2 × −2 × −2 , then xy​

Answer 1

Step-by-step explanation:

x=2−12+1=(2−12+1)×2+12+1

=2−1(2+1)2

∴x=3+22

y=2+12−1=2+12−1×2−12−1

=2−1((2−1)2

Answer 2

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