SOLUTION: factor completely: 3r^2-75
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Algebra: Distributive, associative, commutative properties, FOIL
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Question 225238
:
factor completely:
3r^2-75
Answer by
chibisan(131)
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factor completely :
3r^2-75
3(r^2-25)
Note: (a-b)(a+b) = a^2 - b^2
3(r^2-5^2)
3(r+5)(r-5) (factorised)
