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taterbuglee2003
06.02.2021 •
Mathematics
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Ответ:
hi! this is just your daily reminder that you can do everything you put yourself to do no cap!!! :) ps. your supperrr smart =D
Ответ:
(3)
Step-by-step explanation:
5x^2 - (2x-3)^2
5x^2- (2x-3)(2x-3)
now you distribute, the 5x^2 stay the same for now
So for now just (2x-3)(2x-3)
first 2x * 2x= 4x^2
2x * -3= -6x
-3 * 2x= -6x
-3 * -3= 9
So (2x-3)(2x-3) is 4x^2 -6x-6x+9
You can simplify that to 4x^2 -12x +9
Now we add in the 5x^2 from the start don't forget!
And we are subtracting sooo
5x^2 -(4x^2 -12x +9)
5x^2 -4x^2 +12x -9
x^2 +12x -9