> 数学 >
DIvide x3+x2-14x-24 by x+2
Solution x2-x-12/)x-2)x3+x2-14x-24
x3+2x/-2x2-14x
-x2-2x/-12x-24
-12x-24/0
In this example we see that x+2 is a factor of x3+x2-14x-24,as the remainder is zero.
Thus x3+x2-14x-24÷(x+2)=x2-x-12 with zero remainder
so x3+x2-14x-12/x+2=x2-x-12
人气:274 ℃ 时间:2020-01-29 01:51:39
解答
(x³+x³-14x-24)÷(x+2)=x²-x-12.由x³+x²-14x-24=x³-x³-12x+2x²-2x-24=x(x²-x-12)+2(x²-x-12)=(x²-x-12)(x+2).
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版