Задача 61185 ...

6177d17c8c4c5a5ade8c0e57

26.10.2021 13:00:40

-0.3x13xy²-37xy², якщо x=4, y=-0.2

5f3ea7e3faf909182968ddd9

26.10.2021 15:53:34

★

[m]-0,3x\cdot13xy^2-37xy^2=-3,9x^2y^2-37xy^2=-y^2\cdot (3,9x^2+37)[/m]

x=4, y=–0.2

[m]-(-0,2)^2\cdot (3,9\cdot 4^2+37)=-0,04\cdot (3,9\cdot 16+37)=-0,04\cdot (62,4+37)=-0,04\cdot 99,4=...[/m]