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please help me understand this math problem!!!

2007-08-24 01:09:08 · 3 answers · asked by Anonymous in Science & Mathematics Mathematics

3 answers

f(x)=x^2(x-1)^2(x+2)^3?

When f(x) = 0,

x^2(x-1)^2(x+2)^3 = 0

therefore x = 0, x = 1, x = -2

3 solutions to x

2007-08-24 01:13:31 · answer #1 · answered by whatagowk 2 · 0 0

If a function f(x) is written as the product of multiple expressions, the zeroes of each expression are also zeroes of the function, since zero times anything is also zero. You need to solve for each factor equal to zero.

x^2 = 0 ==> x = 0
(x - 1)^2 = 0 ==> x - 1 = 0 ==> x = 1
(x + 2)^3 = 0 ==> x + 2 = 0 ==> x = -2

So the zeroes are 0, 1, and -2. 0 and 1 are double roots and -2 is a triple root.

2007-08-24 01:13:58 · answer #2 · answered by DavidK93 7 · 0 0

x^2 * (x-1)^2 * (x+2)^3 = f(x) = 0
therefore, x^2=0, (x-1)^2 = 0, (x+2)^3 = 0
x =0, (x-1) = 0, (x+2) = 0
x=0, x=1, x=-2

2007-08-24 04:54:09 · answer #3 · answered by gab BB 6 · 0 0

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