X=-6
3x=18 x=18/3 x=6
If x-3x=18 then x equals -9
x2 + 3x - 18 = x2 + 6x - 3x - 18 = x(x + 6) - 3(x + 6) = (x + 6)(x - 3)
you mean: x+3x+3=x+18 so x=5
To solve the system of equations (3x + 9y = -18) and (-3x + 10y = 18) by elimination, we can add the two equations together to eliminate (x). This results in ( (3x - 3x) + (9y + 10y) = -18 + 18), simplifying to (19y = 0), which gives (y = 0). Substituting (y = 0) back into either equation, such as (3x + 9(0) = -18), results in (3x = -18), leading to (x = -6). Thus, the solution is (x = -6) and (y = 0).
3x=18 x=18/3 x=6
3x+12 = 18 3x = 18-12 3x = 6 x = 2
If x-3x=18 then x equals -9
We have, f(x) = x2-3x-18 f(x) = x2-3x-18 = x2-6x+3x-18 = x(x-6)+3(x-6) = (x+3)(x-6) Factors are (x-6) and (x+3).
x2 + 3x - 18 = x2 + 6x - 3x - 18 = x(x + 6) - 3(x + 6) = (x + 6)(x - 3)
If: 3x+6 = 18 Then: x = 4
x2 + 3x - 18 = (x + 6)(x - 3)
you mean: x+3x+3=x+18 so x=5
3(x + 2) = x - 18 3x + 6 = x - 18 3x - x = -18 - 6 2x = -24 x = -12
x^2+3x-18=0 (x+6)(x-3)=0
To solve the system of equations (3x + 9y = -18) and (-3x + 10y = 18) by elimination, we can add the two equations together to eliminate (x). This results in ( (3x - 3x) + (9y + 10y) = -18 + 18), simplifying to (19y = 0), which gives (y = 0). Substituting (y = 0) back into either equation, such as (3x + 9(0) = -18), results in (3x = -18), leading to (x = -6). Thus, the solution is (x = -6) and (y = 0).
3x+12=x+48: 3x-x=-12+48 2x=36 x=18