Question

Simplify that
Please solve fast

Answer 1

Answer:

$( \sqrt{5} - \sqrt{2} ) {}^{2} \\ apply \: formula \: (x - y) {}^{2} = x {}^{2} + y {}^{2} - 2xy \\ ( \sqrt{5} ) {}^{2} + ( \sqrt{2} ) {}^{2} - 2 \sqrt{5} \times \sqrt{2} \\ = 5 + 2 - 2 \sqrt{10} \\ = 7 - 2 \sqrt{10} \: \: answer$

Some basic alagabraic identities:-

Identity I: (a + b)^2 = a^2 + 2ab + b^2

Identity II: (a – b)^2 = a^2 – 2ab + b^2

Identity III: a^2 – b^2= (a + b)(a – b)

Answer 2

Answer:

7 - 2√10

Step-by-step explanation:

It is is Simple,

Apply the identity of (a - b)² = a² - 2ab + b²

= (√5 - √2)²                        

= (√5)² - 2(√5)(√2) + (√2)²

= 5 - 2√10 + 2

= 7 - 2√10

Hope it Helps!

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