christeinberg1
16.04.2020 •
Mathematics
Write in standard form. (3y-5)(3y+5)
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Ответ:
(3y-5)(3y+5)
Let's start with the formulae
(a+b) (a-b) = a^2-b^2
Let insert it into the equation, we have
(3y-5)(3y+5)= (3y) ^2-(5)^2
3y(3y) -5(5)
9y^2-25. Ans
Ответ:
B
Step-by-step explanation: