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07.04.2020 •
Chemistry
Why must model sometimes be changed
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Ответ:
16x^2+9
Step-by-step explanation:
Use the FOIL method
(3x3)=9
(3)(-4x)=(-12x)
(4x)(3)=12x
(4x)(-4x)=(-16x^2)
-16x^2-12x+12x+9
Combine like terms
-16x^2+9