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factoring day 1
score: 22/48 answered: 11/24
question 12
factor completely:
$5t^{2}-245 = $
question help: video
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Explanation:

Step1: Factor out GCF

$5t^2 - 245 = 5(t^2 - 49)$

Step2: Apply difference of squares

$t^2 - 49 = t^2 - 7^2 = (t-7)(t+7)$

Step3: Combine factors

$5(t^2 - 49) = 5(t-7)(t+7)$

Answer:

$5(t-7)(t+7)$