题目内容
计算:
(1)(x3x5)×x2
(2)(﹣2x4)3+3x4(﹣x)8
(3)6x(x﹣3y2)
(4)(2x﹣3)(4﹣x)
(5)
(1)(x3x5)×x2
(2)(﹣2x4)3+3x4(﹣x)8
(3)6x(x﹣3y2)
(4)(2x﹣3)(4﹣x)
(5)
解:(1)原式=x3+5﹣2=x6
(2)原式=﹣8x12+3x4+8=﹣5x12
(3)原式=6x2﹣6x×3y2=6x2﹣18xy2
(4)原式=8x﹣2x2﹣12+3x=﹣2x2+11x﹣12
(5)∵(﹣2)2=4,50=1,(
)﹣2=4
∴原式=4﹣4=0.
(2)原式=﹣8x12+3x4+8=﹣5x12
(3)原式=6x2﹣6x×3y2=6x2﹣18xy2
(4)原式=8x﹣2x2﹣12+3x=﹣2x2+11x﹣12
(5)∵(﹣2)2=4,50=1,(
∴原式=4﹣4=0.
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