selasaikan operasi akar a) 2√3 (√ 12 + 3 √24 ) b) (√7 + √ 5 ) ( √ 7 -√ 5 )

semoga membantu yaaa :)

a. 2√3 (√12 + 3√24) = (2√3 x √12) + (2√3 x 3√24) = 2√36 + 6√72 = (2 x 6) + 6 x (√36 x √2) = 12 + 36√2
b. (√7 + √5) (√7 - √5) = (√7 x √7) + (√5 x √7) + (√7 x (-√5)) + (√5 x (-√5) = √49 + √35 - √35 - √25 = 7 - 5 = 2