It would help if the expression was given!
Given a value of x, find the value for -3x + 2
x=-2
You don't, unless you know either the value of x or what the expression equals.
That depends on the value of x in the given expression
It would help if the expression was given!
If the expression is (x - y)2, the solution is (7 - -2)2 = (7+2)2 = 92 = 81. If the expression is x - y2, the solution is 7 - (-2)2 = 7 - 4 = 3.
Given a value of x, find the value for -3x + 2
If you mean: x^2+15-3x then its value is 19 when x equals 4
x = 2 is an algebraic equality (Because there is an 'equals'(=) sign) x - 2 is an algebraic expression ( Because there is NO equals sign).
x=-2
The value is 1 if (x, y) = (4, 3) and 0 otherwise.
That's going to depend completely on the value of 'x', and every time 'x' changes, the value of that expression also changes. Whatever 'x' happens to be at the moment, your expression is [ - 2 / (18+x) ].
5X - 2Y X = 9 Y = 4 5(9) - 2(4) 45 - 8 37 is the value
You don't, unless you know either the value of x or what the expression equals.
That depends on the value of x in the given expression
-4 (-9 +5 = -4)