-6
It equals y+1
To find the value of the expression 4x - 2y + xy when x = -1 and y = 5, we first substitute the values of x and y into the expression. This gives us 4(-1) - 2(5) + (-1)(5). Simplifying this further, we get -4 - 10 - 5, which equals -19. Therefore, the value of the expression is -19 when x = -1 and y = 5.
4
0
y=f(x)= x(2x+y)=7 f(x)=2x^2 +xy -7 = 0 y=2x^2 +xy -7 y-xy -7 + 2x^2 = 0 y(1-x)=2x^2-7 y=(2x^2-7) / (1-x) Excuse the working. Y equals 2 X squared minus 7 all divided by 1-X
It equals y+1
If Y = 0 then there is no value of X such that XY = 1.
x+xy=8 xy=-x+8 y=-1+8/x
"xy" refers to the product of "x" and "y". Just substitute the variables for numbers, and do the multiplication.
xy + x + y + 1 = (x + 1)(y + 1).
To find the value of the expression 4x - 2y + xy when x = -1 and y = 5, we first substitute the values of x and y into the expression. This gives us 4(-1) - 2(5) + (-1)(5). Simplifying this further, we get -4 - 10 - 5, which equals -19. Therefore, the value of the expression is -19 when x = -1 and y = 5.
That is the commutative property of equality.
xy = x ÷x y = 1
It equals 1 + 3z and, unless you know the value of z, you are not going to be any the wiser as to its value.
xy + x + y + 1 is an expression, not an equation. An expression cannot be solved.
That depends what the value of p is.
y - 1