(3倍根号7+2倍根号3)*(2倍根号3-3倍根号7)
问题描述:
(3倍根号7+2倍根号3)*(2倍根号3-3倍根号7)
答
(3倍根号7+2倍根号3)*(2倍根号3-3倍根号7)
=(2√3)²-(3√7)²
=12-63
=-51