Mathematics
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OpenStudy (anonymous):
Write the expression (x+6)(x-4) as a polynomial in standard form and state the number of solutions.
*PLEASE HELP ME STEP BY STEP*
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pooja195 (pooja195):
oh so we need to solve it :) are you fimilar with FOIL?
pooja195 (pooja195):
OpenStudy (anonymous):
oh yes i meant
pooja195 (pooja195):
ok :) so do it :)
OpenStudy (anonymous):
ok can I ask you and you check it?
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pooja195 (pooja195):
yes :)
OpenStudy (anonymous):
thank you ok one sec
OpenStudy (anonymous):
would it be
x(x) 6(4) ?
pooja195 (pooja195):
not quite we need to distribute the X ro each number in the next parenthese
pooja195 (pooja195):
\[\huge~(x)(x)+(x)(−4)+(6)(x)+(6)(−4)\]
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OpenStudy (anonymous):
okoh nI got it could you help me with a different one
OpenStudy (anonymous):
thank you
pooja195 (pooja195):
what is the answer to this one? :P
OpenStudy (anonymous):
kind of the same thing
pooja195 (pooja195):
Ok but lts fninsh this first
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pooja195 (pooja195):
x^2−4x+6x−24
combine the likes terms : )
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
x^2 - 3x-10
pooja195 (pooja195):
good :) now we need to solve that
OpenStudy (anonymous):
ok could you show me how?
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pooja195 (pooja195):
Factor it :)
pooja195 (pooja195):
|dw:1433465484892:dw|
pooja195 (pooja195):
What numbers multily to -10 and also equal -3?
OpenStudy (anonymous):
no -1 or -5?
pooja195 (pooja195):
just 5 whats the secound number its not -1
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OpenStudy (anonymous):
-2
pooja195 (pooja195):
(x+5)(x-2)
x+5=0
x-2=0
solve the 2 equations to find the value of x you will have 2 answers.
OpenStudy (anonymous):
-5 and 2
pooja195 (pooja195):
so 2 solutions :)
OpenStudy (anonymous):
thank you