Check whether x = -√2 or -2√2 are roots of x2 + √2 x – 4 = 0.
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Answer:
√2×2+√2×√2-4=0
2√2+√4-4=0
2√2+2-4=0
2√2+(-2)=0
2√2-2=0
2√2=2
2=2-√2
=2-√2/2
=-√2
i think this may be the answer but not confirm
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