java在杭州好找工作吗:初二分解因式

来源:百度文库 编辑:查人人中国名人网 时间:2024/04/29 14:40:24
(x^2-5)^2+8(5-x^2)+16
要求步骤

(x^2-5)^2+8(5-x^2)+16
=(x^2-5)^2-8(x^2-5)+16
={(x^2-5)-4}^2
=(x^2-9)^2
=(x+3)^2(x-3)^2

(X^2-5)(X^2-5)+8(5-X^2)+16
=X^4-10X^2+25+40-8X^2+16
=X^4-18X^2+81
=(X^2-9)^2