问题
解答题
化简下列各题: (1)
(2)
(3)(-
(4)6
(5)
(6)
|
答案
(1)原式=(25+24)×(25-24)
=49
=7;
(2)原式=4×
×16925 9
=
×4
×25 9 169
=2×
×135 3
=
;130 3
(3)原式=1 2 24×6
=6;
(4)原式=1836x6y2
=108x3y;
(5)原式=x2y
=x
;y
(6)原式=-
×3 4
×568 3
=-4
.7