csorensen
20.09.2019 •
Mathematics
Simplify
(4x^2y^3 + x^3y^3- 2) - (3x^3y^2- 5)
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Ответ:
=x^3 y^3-3x^3y^2+4x^2y^3+3
Step-by-step explanation:
Ответ:
Step-by-step explanation:
Use (a+b)²= a²+2ab+b² formula
We can see that a²=81n² (so a=9n) and b²=100 (so b=10) and 2ab = 2*9n*10=180n.
therefore only √(81n²+180n+100) would be perfect square and this - isn't.