Question

find the value (1+x^92) (1-x^141) when x=-1​

Answer 1

Question:

Find the value of (1+x^92) (1-x^141) when x=-1​

Solution:

$(1+x^{92})(1-x^{141})\\\\\\(1+(-1)^{92})(1-(-1)^{141})\\\\\\(1+1)(1-(-1))\\\\\\2(1+1)\\\\\\2\times2\\\\\\=4\\\\\\\boxed{=4}$

Answer:

$=4$

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