Question

-6xy+5y-6x-3y+2x+8xy при x=-4,4 y=12,3​

Answer 1

-6xy+5y-6x-3y+2x+8xy = -6xy+8xy+5y-3y+2x-6x = 2xy+2y-4x

Подставляем значения х и у

2*(-4,4)*12,3+2*12,3-4*(-4,4) = 108,24+24,6+17,6 = 150,44

Answer 2

To find the value of the expression $-6xy + 5y - 6x - 3y + 2x + 8xy$ when $x = -4$ and $y = 12$, you simply substitute the values of $x$ and $y$ into the expression and perform the calculations:

Substitute $x = -4$ and $y = 12$:

$-6 \cdot (-4) \cdot 12 + 5 \cdot 12 - 6 \cdot (-4) - 3 \cdot 12 + 2 \cdot (-4) + 8 \cdot (-4) \cdot 12$

Now calculate each term:

$288 + 60 + 24 - 36 - 8 - 384$

$288 + 60 + 24 - 36 - 8 - 384 = -56$

So, when $x = -4$ and $y = 12$, the expression $-6xy + 5y - 6x - 3y + 2x + 8xy$ evaluates to $-56$.