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> 计算题:(1)30+(-4)2÷(-12)-2(2)(3a2)3-(a4)2-(-5a5)2-(a2)2(3)(x+2)(x-2)(x2+4)(4)(a+3)2(a-3)2.-数学
计算题:(1)30+(-4)2÷(-12)-2(2)(3a2)3-(a4)2-(-5a5)2-(a2)2(3)(x+2)(x-2)(x2+4)(4)(a+3)2(a-3)2.-数学
题目简介
计算题:(1)30+(-4)2÷(-12)-2(2)(3a2)3-(a4)2-(-5a5)2-(a2)2(3)(x+2)(x-2)(x2+4)(4)(a+3)2(a-3)2.-数学
题目详情
计算题:
(1)3
0
+(-4)
2
÷
(-
1
2
)
-2
(2)(3a
2
)
3
-(a
4
)
2
-(-5a
5
)
2
-(a
2
)
2
(3)(x+2)(x-2)(x
2
+4)
(4)(a+3)
2
(a-3)
2
.
题型:解答题
难度:中档
来源:不详
答案
(1)原式=1+16÷4
=1+4
=5;
(2)原式=27a6•a8-25a10•a4
=27a14-25a14
=2a14;
(3)原式=(x2-4)(x2+4)
=x4-16;
(4)原式=[(a+3)(a-3)]2
=(a2-9)2
=a4-18a2+81.
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题目简介
计算题:(1)30+(-4)2÷(-12)-2(2)(3a2)3-(a4)2-(-5a5)2-(a2)2(3)(x+2)(x-2)(x2+4)(4)(a+3)2(a-3)2.-数学
题目详情
(1)30+(-4)2÷(-
(2)(3a2)3-(a4)2-(-5a5)2-(a2)2
(3)(x+2)(x-2)(x2+4)
(4)(a+3)2(a-3)2.
答案
=1+4
=5;
(2)原式=27a6•a8-25a10•a4
=27a14-25a14
=2a14;
(3)原式=(x2-4)(x2+4)
=x4-16;
(4)原式=[(a+3)(a-3)]2
=(a2-9)2
=a4-18a2+81.