计算题(1)(2×102)×(3×103)(2)-15+(12)2+(π-3)0.(3)(2x)3-y3÷(16xy2)(4)(x-1)(x2+x+1)-数学

题目简介

计算题(1)(2×102)×(3×103)(2)-15+(12)2+(π-3)0.(3)(2x)3-y3÷(16xy2)(4)(x-1)(x2+x+1)-数学

题目详情

计算题
(1)(2×102)×(3×103
(2)-15+(
1
2
)2+(π-3)0

(3)(2x)3-y3÷(16xy2
(4)(x-1)(x2+x+1)
题型:解答题难度:中档来源:不详

答案

(1)(2×102)×(3×103),
=2×3×102+3,
=6×105;

(2)-15+(class="stub"1
2
)2+(π-3)0

=-1+class="stub"1
4
+1,
=class="stub"1
4


(3)(2x)3•y3÷(16xy2),
=8x3•y3÷(16xy2),
=class="stub"1
2
x2y;

(4)(x-1)(x2+x+1),
=(x-1)(x2+x+1),
=x3+x2+x-x2-x-1,
=x3-1;

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