(√2+1) (√2-1)
without using identity
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Answer:
The answer is 1.
Step-by-step explanation:
= (√2 + 1) (√2 - 1)
= (√2 × √ 2) - (√2 × 1) + (1 × √2) - (1 × 1)
= 2 - √2 + √2 - 1
= 2 - 1 (-√2 + √2 = 0)
= 1
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