JulieLu
find the zeros of the function y=x^24x+3 by factoring



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geerky42
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x²4x+3 = (x  ?)(x  ?)

JulieLu
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(x3)(x1)

geerky42
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Excellent. Now find zero. Do you know how to?

JulieLu
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i have no idea

geerky42
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(x3)(x1) = 0 so either (x  3) or (x  1) must be equal zero.

JulieLu
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(x3)

geerky42
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or (x  1).
So set both terms equal to zero.
(x  3) = 0
(x  1) = 0
Find x. You will have two answers.

JulieLu
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x=3
x=1

JulieLu
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thank you