3 years ago

Which of the following is a quadratic equation whose roots are 3 and -1?

Mathematics

2 answers:

scZoUnD [109]3 years ago

8 0

Answer:
(x-3)(x+1)
x^2-2x-3

Alex Ar [27]3 years ago

4 0

Answer:

JK up FMyRick they rock TBD Trinity scrump TV TM in

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x-intercepts are found by setting y=0
$y=2x^2-8x-10\rightarrow0=2x^2-8x-10$
factor out a 2 $0=2(x^2-4x-5)\rightarrow0=x^2-4x-5$
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therefore, x-intercepts are (-1,0) and (5,0)

y-intercepts are found by setting x=0
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$\rightarrow y=0-0-10=-10$
therefore, y-intercept is (0,-10)

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