2 years ago

The square of a number is 12 less than the sum of 34 and 42 . What is the number?

1 answer:

Anni [7]2 years ago

7 0

Answer: 8

Step-by-step explanation: 34 + 42 = 76

76 - 12 = 64

square root of 64 = 8

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Step-by-step explanation:

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$= \frac{2 \sqrt{2} - \sqrt{3} }{ \sqrt{2} + \sqrt{3} } \times \frac{ \sqrt{2} - \sqrt{3} }{ \sqrt{2} - \sqrt{3} }$

$= \frac{ 2( \sqrt{2} - \sqrt{3} )( \sqrt{2} - \sqrt{3} )}{ { \sqrt{2} }^{2} - { \sqrt{3} }^{2} }$

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mylen [45]

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fenix001 [56]

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