Question

simplify under root 5 + under root 2 to the power 2
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Answer 1

Answer:

( √5 + √2 )²

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

( √5 + √2 )²

⇒ ( √ 5 )² + ( √ 2 )² + 2( √5 × √ 2 )

⇒ 5 + 2 + 2√( 5 × 2 )

⇒ 5 + 2 + 2√10

⇒ 7 + 2√10

Answer 2

Step-by-step explanation:

(√5+√2)^2

${(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab$

${ \sqrt{5} }^{2} \: + { \sqrt{2} }^{2} + 2( \sqrt{5)} ( \sqrt{2)}$

$5 + 2 + \sqrt{(5 \times 2)}$

$7 + 2 \sqrt{10}$

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hope its helpful