用竖式方法计算(4x^3+6x^2+5)(2x^+4x-3)
问题描述:
用竖式方法计算(4x^3+6x^2+5)(2x^+4x-3)
答
..4x³+6x²+5
..2x²+4x-3
------------------------------------
..-12x³-18x²-15
.16x^4+24x³ +20x
. 8x^5+12x^4 +10x²
-------------------------------------
8x^5+28x^4+12x³-8x²+20x-15
(4x^3+6x^2+5)(2x^+4x-3)=8x^5+28x^4+12x³-8x²+20x-15