Question

(6+ 2 raiz de 3 /4 + 3 ) * (6 -2 raiz de 3 /4 + 3)

Answer 1

= [(6+2✓3'+12)/4] × [(6-2✓3'+12)/4]

= [(18+2✓3')/4] × [(18-2✓3')/4]

= [(9+✓3')/2] × [(9-✓3')/2]

= (9²-✓3'²)/4

= (81-3)/4

= 78/4

= 39/2 ou 19,5