Question

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Answer 1

Answer:

12. Sum of 2√5 and 3√7

= 2√7+3√7

= 2×2.236 + 3×2.646

= 4.472+7.938

= 12.410.

13. It is in the form of (a + b)^2

(a+b)^2 = a^2 + 2ab + b^2

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

= 2+ 2(√10)+5

=7 + 2√10

Hope it helps you.

Answer 2

Answer:

$12).it \: is \: impossible \\ 13). \: ans7 + 2 + \sqrt{ {5)}^{2} }$

Step-by-step explanation:

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