CassidgTab
31.05.2020 •
Mathematics
The answer is correct? If it’s wrong please explain me how to solve it :’)
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Ответ:
48
Step-by-step explanation:
x = -2 y =3
3x² - 2xy²
3(-2)² -2(-2)(3)²
square first
3*4 -2(-2)*9
multiplty from left to right
12-2(-2)*9
multiply from left to right again
12 -(-36) subtract using rule for integers that double minus is plus
12 + 36
48
Ответ: