(1) 1/4√256+√0.25 (2) 2√2+3√5-3√2-3√5 (3) √(﹣2/5)²-√1-(﹣4/5)²

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 15:41:00
(1) 1/4√256+√0.25 (2) 2√2+3√5-3√2-3√5 (3) √(﹣2/5)²-√1-(﹣4/5)²
x)0T07y1LH*hi*6ҦC`XSxs5P(f@&pq"}:٤_`g3O746Ѓ 1 NL*٩ +Ѕj(C&/@u 0/]C K 1{

(1) 1/4√256+√0.25 (2) 2√2+3√5-3√2-3√5 (3) √(﹣2/5)²-√1-(﹣4/5)²
(1) 1/4√256+√0.25 (2) 2√2+3√5-3√2-3√5 (3) √(﹣2/5)²-√1-(﹣4/5)²

(1) 1/4√256+√0.25 (2) 2√2+3√5-3√2-3√5 (3) √(﹣2/5)²-√1-(﹣4/5)²
(1) 1/4√256+√0.25
=1/4×16+0.5
=4+0.5
=4.5
(2) 2√2+3√5-3√2-3√5
=(2√2-3√2)+(3√5-3√5)
=-√2
(3) √(﹣2/5)²-√1-(﹣4/5)²
=2/5-√9/25
=2/5-3/5
=-1/5