You really should use your calculator for such simple questions instead of posting them on WA . It requires far fewer key depressions and you get your answer quicker. However, since you are obviously incapable of carrying out even such a simple task, and the answer is 18.
-9
x^2 +9 =x^2 -9 9=-9 No solution
x2-7x-18 (x-9) (x+2) x=9 x=-2 X= either 9 or -2
The answer to the problem of 12X plus 13 equals 9 is x equals -1/3.
2xy*9 if x=3 and y = 2 2(3)(2)*9 12*9 108 You substitute x and y for their equivalent (3 and 2) then simply multiply 2*x*y, then multiply the answer of that by 9.
x+2=9 x=9-2 x=7
-9
9
log9(x)=2 x=9^2 x=81
x^2 +9 =x^2 -9 9=-9 No solution
x=-1/2
x2-7x-18 (x-9) (x+2) x=9 x=-2 X= either 9 or -2
If x=9, x=9
It is an algebraic expression involving x. Of do you mean 'what is x if 2x - 9 equals 9?' 2x - 9 = 9 ⇒ 2x - 9 + 9 = 9 + 9 ⇒ 2x = 18 ⇒ 2x ÷ 2 = 18 ÷ 2 ⇒ x = 9
X=2
The answer to the problem of 12X plus 13 equals 9 is x equals -1/3.
2xy*9 if x=3 and y = 2 2(3)(2)*9 12*9 108 You substitute x and y for their equivalent (3 and 2) then simply multiply 2*x*y, then multiply the answer of that by 9.