OpenStudy (anonymous):

Help with algebra 2 please

2 years ago
OpenStudy (arindameducationusc):

hello

2 years ago
OpenStudy (phi):

f/g means divide f's expression by g's

2 years ago
OpenStudy (arindameducationusc):

divide f(x) by g(x) and take out the point in which g(x) is zero. so domain will be real numbers - of that point

2 years ago
OpenStudy (arindameducationusc):

@phi can i try this one? you can verify me if i am wrong

2 years ago
OpenStudy (anonymous):

@arindameducationusc hi

2 years ago
OpenStudy (anonymous):

okay so like -20x^2 + 14x + 12 / 5x - 6 That's what I thought it was initially, but not sure.

2 years ago
OpenStudy (phi):

it might be easier to multiply g(x) by the choice and see if you get f(x) or, you can try dividing g(x) into f(x) of course, you need to know how to divide polynomials by another polynomial

2 years ago
OpenStudy (arindameducationusc):

yes you are going the right way... just be careful with the domain.

2 years ago
OpenStudy (arindameducationusc):

@lily1021 do you know how to divide polynomials?

2 years ago
OpenStudy (phi):

if you learn anything in math, it is *no divide by zero* if there is an "x" value that makes the bottom zero , we do not allow x to be that number

2 years ago
OpenStudy (arindameducationusc):

@phi you are right

2 years ago
OpenStudy (arindameducationusc):

yes @phi if g(x) is zero then it wont be defined

2 years ago
OpenStudy (skullpatrol):

But, do you know why you can never divide by 0 @lily1021 ?

2 years ago
OpenStudy (anonymous):

because you can't find an answer

2 years ago
OpenStudy (anonymous):

i've divided polynomials before but i'm usually a hit or miss with them

2 years ago
OpenStudy (skullpatrol):

Yes, that makes it "undefined."

2 years ago
OpenStudy (anonymous):

right

2 years ago
OpenStudy (skullpatrol):

Division by 0 has no meaning in the set of real numbers.

2 years ago
OpenStudy (anonymous):

so I'm not going to divide then? Idk my heads spinning

2 years ago
OpenStudy (skullpatrol):

Just like a word that has no meaning is undefined in the dictionary :-)

2 years ago
OpenStudy (skullpatrol):

Yes, first you divide one polynomial into the other.

2 years ago
OpenStudy (skullpatrol):

Second you set the divisor equal to 0 and find the values that make the divisor equal to 0 and exclude them in your answer.

2 years ago
OpenStudy (skullpatrol):

Does that procedure make sense @lily1021 ?

2 years ago
OpenStudy (skullpatrol):

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2 years ago