Question

if value for x=-1, y=1 and z=2 then (2x+y) +3y(y-z) - 2x(x-y)​

Answer 1

Given,

The values of x,y and z are -1,1 and 2 respectively.

To find out,

The value of (2x+y)+3y(y-z)-2x(x-y)

Solution:

As the values are given, substitute them.

$(2x+y)+3y(y-z)-2x(x-y) \\ \\ (2 \times (- 1) + 1) + 3 \times 1(1 - 2) - 2 \times ( - 1)( - 1 - 1) \\ \\ ( - 2 + 1) + 3( - 1) + 2( - 2) \\ \\ - 1 - 3 - 4 \\ \\ - 8</p><p>$

Therefore the value of (2x+y)+3y(y-z)-2x(x-y) is -8.

Answer 2

Answer:

-8

Step-by-step explanation:

(2x+y)+3y(y-z) -2x(x-y)

(2*(-1)+(1))+3*1(1-2)-2*(-1)((-1)-(1))

-1-3-4

-8 ans.