Question

x=1 and y = -1 find the value of the following expression :- 3x²+3y²-3xy​

Answer 1

Answer:

The value of the expression: $-3x^{2} +3y^{2} -3xy$ given x=1 and y=-1 is 3.

Step-by-step explanation:

The given equation is an equation of x and y, the values of x and y are given.

The value of x is 1 and y is -1.

We have to substitute the values of x and y in the the given equation.

Substituting x=1 and y=-1 in the given equation:

$-3x^{2} +3y^{2} -3xy=-3(1)^{2} +3(-1)^{2} -3(1)(-1)=-3+3+3=-3+6=3$

The value of the given equation is 3.