Question

simplify? (3root5+2root3) whole square​

Answer 1

Answer:

to expand (3√5 + 2√3)²

identity used

(a + b)² = a²+b²+2ab

here a = 3√5 and b = 2√3

therefore (3√5 + 2√3)²

=> (3√5)² + (2√3)² + 2*3√5*2√3

=> 45 + 12 + 12 √15

=> 57 + 12√15