Asked by doge master

what is the factored form of 12x^2 - 75
A: 3(2x + 5)^2
B: 3(2x + 5) (2x - 5)
C: 3(2x - 5)^2
D: 3(5x + 2) (5x - 2)

idk where to start. Help please.
Answered by Reiny
Well, your first step obviously is to look for a common factor, do that

after that .......

- does the difference of squares ring a bell?
Answered by doge master
If i'm supposed to be looking for a common factor in 12 and 75, i can find anything that isn't a decimal?
Answered by doge master
or is it supposed to be 75 and 144, seeing as 12 squared is 144
Answered by Ms Pi 3.14159265358979323
Common factor out the 3 : )
3(4) = 12
and 3(25) = 75
then you have a difference of squares left : )
Answered by Ms Pi 3.14159265358979323
= 3(4x^2 - 25)
= ... now factor with a difference of squares : )
Answered by doge master
so is the answer C? i may be wrong because i'm a lil bit rusty when it comes to difference of squares.
Answered by doge master
oh or is it B?
Answered by Ms Pi 3.14159265358979323
WHen you expand B and C which one gives you the 4x^2 - 25
Only one of them does : )
Answered by doge master
This is the question that made me switch to Brainly. Youre not helpful and dont tell me anything. Its annoying. Rest in peace Ms Sue; This only went downhill after she passed.
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