#factoring quadratics with a common factor

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gleaming ridge
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hello
$\text{why is }7x^2 + 28x - 35\ \text{not }7(x-5)(x+1)\ \text{but it is }7(x+5)(x-1)\ \ \text{i know when you expand }7(x-5)(x+1) \ \text{then it is equivalent to }7x^2 -196x - 245 \ \text{but how are you meant to prevent getting that}
\text{ instead of the actual factorised quadratic?}$

coral thornBOT
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modest juniperBOT
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odin4252

gleaming ridge
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does that make sense

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like, do i always have to expand after factorising?

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to make sure?

sour echo
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Because when you factor it you have 7(x^2 + 4x -5)

gleaming ridge
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wait nevermind i figured it out

sour echo
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Yea

gleaming ridge
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thx king

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+close