The value of 4-64-6 is equal to

The correct option is D 10The given expression is (4+√(6))(4 √(6)) Using identity (a+b)(a b) = a^2 b^2 we can write the above (4+√(6))(4 √(6)) = 4^2 (√( ...

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Standard IX

Mathematics

Visualisation of Identity 2

The value of ...

Question

The value of $(4 + \sqrt{6}) (4 - \sqrt{6})$ is equal to

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Solution

The correct option is D $10$
The given expression is $(4 + \sqrt{6}) (4 - \sqrt{6})$

Using identity $(a + b) (a - b) = a^{2} - b^{2}$ we can write the above

$(4 + \sqrt{6}) (4 - \sqrt{6}) = 4^{2} - (\sqrt{6})^{2}$
= $16 - 6 = 10$

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The value of (4+√6)(4−√6) is equal to

The correct option is D 10The given expression is (4+√6)(4−√6) Using identity (a+b)(a−b)=a2−b2 we can write the above (4+√6)(4−√6)=42−(√6)2 = 16−6=10

The value of $(4 + \sqrt{6}) (4 - \sqrt{6})$ is equal to

The correct option is D $10$
The given expression is $(4 + \sqrt{6}) (4 - \sqrt{6})$

Using identity $(a + b) (a - b) = a^{2} - b^{2}$ we can write the above

$(4 + \sqrt{6}) (4 - \sqrt{6}) = 4^{2} - (\sqrt{6})^{2}$
= $16 - 6 = 10$