Question

Check whether x= -√2, -2√2 are the roots of x2+√2x -4=0.

Answer 1

Answer:

1. x²+√2 x-4=0

Step-by-step explanation:

x²-√2 x+2√2 x- 4=0

x(x-√2)+2√2(x-√2)=0

(x+2√2)(x-√2)=0

x=-2√2 or x=√2

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