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OpenStudy (anonymous):
write a quadratic equation in the variable x having the given numbers as solutions. type the equation in standard form ax^2+bx+c=0 the solutions are -11,5
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OpenStudy (saifoo.khan):
(x+11)(x-5) = 0 FOIL
OpenStudy (anonymous):
shouldn't it be (x-11)(x+5)=0?
OpenStudy (saifoo.khan):
No, b/c the solutions are x = -11 x + 11 = 0
OpenStudy (anonymous):
ok so when I foil it then what?
OpenStudy (anonymous):
is it x^2+7x-55?
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