DIvide x3+x2-14x-24 by x+2

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
mikemail 1年前 已收到2个回答 举报

阿泥0B0 幼苗

共回答了23个问题采纳率:91.3% 举报

(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).

1年前

2

caofl 幼苗

共回答了16个问题 举报

是考SAT吗?

1年前

0
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