灵鹊做题网开方数的乘法.开方24×开方425开方3×3开方18开方6×开方15×开方10-6开方45×—（-4开方48）四分之一开
来源：学生作业帮 编辑：灵鹊做题网作业帮 分类：数学作业 时间：2024/04/27 04:46:10
开方数的乘法.
开方24×开方42
5开方3×3开方18
开方6×开方15×开方10
-6开方45×—（-4开方48）
四分之一开方12a×3开方3a
开方24×开方42
5开方3×3开方18
开方6×开方15×开方10
-6开方45×—（-4开方48）
四分之一开方12a×3开方3a
24^0.5×42^0.5
=(24×42)^0.5
=12×(7^0.5)
5(3^0.5)×3(18^0.5)
=5(3^0.5)×3×3(2^0.5)
=5(3^0.5)×9(2^0.5)
=45(6^0.5)
6^0.5×15^0.5×10^0.5
=(6×15×10)^0.5
=(900)^0.5
=30
-6(45^0.5)×-(-4(48^0.5))
=-6(45^0.5)×4(48^0.5)
=-24(45^0.5)×(48^0.5)
=-24×3(5^0.5)×4(3^0.5)
=-288×(5^0.5)×(3^0.5)
=-288×(15^0.5)
(12a)^0.5/4×3(3a)^0.5
=(12a)^0.5×3(3a)^0.5/4
=3×(12a×3a)^0.5/4
=3×(36a^2)^0.5/4
=3×6a/4
=9a/2
=(24×42)^0.5
=12×(7^0.5)
5(3^0.5)×3(18^0.5)
=5(3^0.5)×3×3(2^0.5)
=5(3^0.5)×9(2^0.5)
=45(6^0.5)
6^0.5×15^0.5×10^0.5
=(6×15×10)^0.5
=(900)^0.5
=30
-6(45^0.5)×-(-4(48^0.5))
=-6(45^0.5)×4(48^0.5)
=-24(45^0.5)×(48^0.5)
=-24×3(5^0.5)×4(3^0.5)
=-288×(5^0.5)×(3^0.5)
=-288×(15^0.5)
(12a)^0.5/4×3(3a)^0.5
=(12a)^0.5×3(3a)^0.5/4
=3×(12a×3a)^0.5/4
=3×(36a^2)^0.5/4
=3×6a/4
=9a/2