Mathematics
7 Online
OpenStudy (anonymous):
factor completely:
45x2 + 57x + 18
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OpenStudy (anonymous):
what number is the HCF (Highest Common Factor)
OpenStudy (anonymous):
in this quadratic.?
OpenStudy (anonymous):
3?
OpenStudy (anonymous):
9
OpenStudy (anonymous):
not a quadratic
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OpenStudy (anonymous):
So you can factorise the 9 out of the quadratic first.
\[9(?x^2+?x+?)\]
OpenStudy (anonymous):
Fill in those question marks.
OpenStudy (anonymous):
k one sec
thanks
OpenStudy (anonymous):
I also have trouble with factoring can u help me?? @Azteck
OpenStudy (anonymous):
And it's meant to be -18 I think.
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OpenStudy (anonymous):
I think you wrote the wrong expression.
OpenStudy (anonymous):
9 doesn't work, it doesn't go into 57.
OpenStudy (anonymous):
9 doesnt
OpenStudy (anonymous):
\[3(15x ^{2}+19x+18)\]
OpenStudy (anonymous):
yes! so it was 3
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OpenStudy (anonymous):
Oh god. @julianahe why did you say 9?
OpenStudy (anonymous):
thanks @hsrikako
OpenStudy (anonymous):
My mistake.
OpenStudy (anonymous):
I thought it was i was not sure buit you seem like an expert so i trusted u
lol
OpenStudy (anonymous):
And it is quadratic. You need to use the quadratic formula for that.
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OpenStudy (anonymous):
Sorry @xxxo about that.
OpenStudy (anonymous):
all good
thanks
OpenStudy (anonymous):
And you don't need to use the quadratic formula.
OpenStudy (anonymous):
@hsrikako do you tips on factorizing I have troubleee
OpenStudy (anonymous):
You are welcome to PM me.
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OpenStudy (anonymous):
\[3(3x-2)(5x-3)\]