nilai dari 3√20-3√28-√80+3√63 adalah..

3√20-3√28-√80+3√63
= 3.2√5-3.2√7-4√5+3.3√7
= 6√5-6√7-4√5+9√7
= 2√5+ 3√7
= 12,4094

:3√20-3√28-√80+3√63
:6√5 - 6√7 - 4√5 + 9√7
:2√5 + 3√7
:12.40939