mar1e0721
factor the trinomials completely
7/5a2−63/5a−126
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\[\frac{ 7 }{ 5 }a^2-\frac{ 63 }{ 5 }a-126\]
mar1e0721
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yes
JackSmiley
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|dw:1349586622551:dw|
JackSmiley
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|dw:1349586774244:dw|
JackSmiley
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Makes sense? :)
mar1e0721
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where is factor?
mar1e0721
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i dont get it. well
JackSmiley
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the quadratic formula is for determining what the variable equals. Is that what you were looking for?
mar1e0721
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hey i get it. thanks.
JackSmiley
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|dw:1349587513886:dw|
That's the quadratic formula.
|dw:1349587548271:dw|
This is what you would get, and I don't think that's what you guys are doing now. Am I wrong?
JackSmiley
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Oh, ok, good on ya' mate.
mar1e0721
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by the way. 7/5* 18=126. wrong 45
JackSmiley
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no, i believe 90(7/5) is 126.. do you have a calculatour?
JackSmiley
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|dw:1349588181810:dw|
Although, you were right, I should have written 18, not 45
mar1e0721
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hey thank you so much.. i get it. =D
JackSmiley
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Good on 'ya mate!