Question

if x=√2, then solve for x2+ 10x-1​

Answer 1

Answer:

x² + 10x - 1

(√2)² + 10×√2 - 1

2 + 10√2 - 1

1 + 10√2..

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Answer 2

Answer:

X2+10x-1 = √2×2+10×√2-1 = 2√2+10√2-1 = 12√2-1