(root11-root7) (root11+root7)
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4
☛ ( √11 - √7 )( √11 + √7 )
☛ (√11)² - (√7)² { (a + b)(a - b) = a² - b² }
☛ 11 - 7
☛ 4
Answered by
0
Answer:
We know,
that its a^2-b^2
=>11-7
=>4
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