Question

Check whether2root3+root5×2root3-root5

Answer 1

Answer:

7

Step-by-step explanation:

Using Identity (a+b) (a-b) = a^2 - b^2,

(2√3 + √5)(2√3 - √5) = (2√3)^2 - (√5)^2

= 12 - 5

=7

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