Maths!!!

👨🏻‍🏫 學術台數學

123

2008-11-23 9:15 pm

1. If Ax(x-1)(x+2) + Bx(x-1) + Cx + D = 5x^3 + 3x^2 - 10x + 6, find the
values of A,B,C,D.

回答 (3)

abclasalle

2008-12-07 9:39 pm

✔ 最佳答案

expend: Ax^3 + Ax^2 - 2Ax + Bx^2 - Bx + Cx + D

A=5

A+B=3
5+B=3
B=-2

-2A-B+C=-10
-10+2+C=-10
C=-2

D=6

參考: myself

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tak ying

2008-12-09 9:24 pm

what do you say?please say chinese,ok?

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Susan_

2008-12-07 9:35 pm

1.如果Ax(x-1)(x+2) + Bx(x-1) + Cx + D = 5x^3 + 3x^2 - 10x + 6，找出A,B,C,D的價值。？

參考: ^ = ?

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