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计算题:(1)(-a2)3+(-a3)2(2)(x2y)4÷(x2y)+(x2y)3(3)(b2n)3(b3)4n÷(b5)n+1(4)(1100×199)200×(100×99)201.
题目详情
计算题:
(1)(-a2)3+(-a3)2
(2)(x2y)4÷(x2y)+(x2y)3
(3)(b2n)3(b3)4n÷(b5)n+1
(4)(
×
)200×(100×99)201.
(1)(-a2)3+(-a3)2
(2)(x2y)4÷(x2y)+(x2y)3
(3)(b2n)3(b3)4n÷(b5)n+1
(4)(
1 |
100 |
1 |
99 |
▼优质解答
答案和解析
(1)(-a2)3+(-a3)2
=-a6+a6
=0;
(2)(x2y)4÷(x2y)+(x2y)3
=(x2)4y4÷(x2y)+(x2)3y3
=x8y4÷(x2y)+x6y3
=x6y3+x6y3
=2x6y3;
(3)(b2n)3(b3)4n÷(b5)n+1
=b6nb12n÷b5n+5
=b18n÷b5n+5
=b13n-5;
(4)(
×
)200×(100×99)201
=(
×
×100×99)200×(100×99)
=100×99
=9900.
=-a6+a6
=0;
(2)(x2y)4÷(x2y)+(x2y)3
=(x2)4y4÷(x2y)+(x2)3y3
=x8y4÷(x2y)+x6y3
=x6y3+x6y3
=2x6y3;
(3)(b2n)3(b3)4n÷(b5)n+1
=b6nb12n÷b5n+5
=b18n÷b5n+5
=b13n-5;
(4)(
1 |
100 |
1 |
99 |
=(
1 |
100 |
1 |
99 |
=100×99
=9900.
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