Question

simplify (2√5+3√2)(2√5-3√2) ​

Answer 1

Answer:

2√5 + 3√2)2 = (2√5)2 + (3√2)2 + 2(2√5)(3√2) [(a + b)2 = a2 + b2 + 2ab] = 20 + 18 + 12√10 = 38 + 12√10Read more on Sarthaks.com - https://www.sarthaks.com/601999/simplify-25-32-2?show=602007#a602007

Answer 2

Answer:

(2√5+3√2)(2√5-3√2)

As (a+b)(a-b) = a^2-b^2

We get,

(2√5+3√2)(2√5-3√2) = (2√5)^2 - (3√2)^2 = (4x5) - (9x2) = 20 - 18 = 2