Question

pliz give answer step step by step if x= -1

Answer 1

If x= -1
then
$( - 1) {}^{3} - ( - 1) {}^{2} - (2 + \sqrt{2}) - 1 + \sqrt{2 = 0}$
-1-1-(-2-√2)+√2=0
-2+2+√2+√2=0
-2+2 will be cancel out
2√2=0
√2=0

Answer 2

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