Question

Упростить Выражение 2(3x-y)+4(x+2y)-5(3x-2y) нанайдите его значение при x=3, y=-1

Answer 1

6x-2y+4x+8y-15y+10y при x=3,y=-1 Подставляем,
6*3-2(-1)+4*3+8*(-1)-15*(-1)+10*(-1)=29
Ответ:29

Answer 2

I can help you with your math problem. To simplify the expression, you need to apply the distributive property and combine the like terms. Here are the steps:

$$ \begin{aligned} 2(3x-y)+4(x+2y)-5(3x-2y) &= 6x-2y+4x+8y-15x+10y \\ &= (6x+4x-15x)+(-2y+8y+10y) \\ &= -5x+16y \end{aligned} $$

To find the value of the expression when $x=3$ and $y=-1$, you need to substitute these values into the simplified expression and evaluate it. Here is how:

$$ \begin{aligned} -5x+16y &= -5(3)+16(-1) \\ &= -15-16 \\ &= -31 \end{aligned} $$

Therefore, the simplified expression is $-5x+16y$ and its value when $x=3$ and $y=-1$ is $-31$. I hope this helps.Ответь+подробно.+Упростить+Выражение+2(3x-y)+4(x+2y)-5(3x-2y)+нанайдите+его+значение+при+x=3,+y=-1