Question

-8xy+4y-4x-3y+2x+8xy при x= -4,4; y=10,3

Answer 1

=2х+у
=2*(-4.4)+10.3=-8.8+10.3=1.5

Answer 2

-8xy+4y-4x-3y+2x+8xy = у-2х = 10,3+8,8 = 19,1

Answer 3

To evaluate the expression $-8xy + 4y - 4x - 3y + 2x + 8xy$ at the given values of $x$ and $y$, we substitute the values and perform the calculations.

1. When $x = -4$ and $y = 10$:

   $-8xy + 4y - 4x - 3y + 2x + 8xy$

   $= -8(-4)(10) + 4(10) - 4(-4) - 3(10) + 2(-4) + 8(-4)(10)$

   $= 320 + 40 + 16 - 30 - 8 - 320$

   $= 18$

2. When $x = -4$ and $y = 3$:

   $-8xy + 4y - 4x - 3y + 2x + 8xy$

   $= -8(-4)(3) + 4(3) - 4(-4) - 3(3) + 2(-4) + 8(-4)(3)$

   $= 96 + 12 + 16 - 9 - 8 - 96$

   $= 11$

3. When $x = 4$ and $y = 10$:

   $-8xy + 4y - 4x - 3y + 2x + 8xy$

   $= -8(4)(10) + 4(10) - 4(4) - 3(10) + 2(4) + 8(4)(10)$

   $= -320 + 40 - 16 - 30 + 8 + 320$

   $= 2$

4. When $x = 4$ and $y = 3$:

   $-8xy + 4y - 4x - 3y + 2x + 8xy$

   $= -8(4)(3) + 4(3) - 4(4) - 3(3) + 2(4) + 8(4)(3)$

   $= -96 + 12 - 16 - 9 + 8 + 96$

   $= -5$

So, for the given values of $x$ and $y$:

1. $x = -4$ and $y = 10$, the expression evaluates to $18$.
2. $x = -4$ and $y = 3$, the expression evaluates to $11$.
3. $x = 4$ and $y = 10$, the expression evaluates to $2$.
4. $x = 4$ and $y = 3$, the expression evaluates to $-5$.