if this is the Equation 9X^2 - 18X +9 = Zero 9(X^2 - 2X +1)= Zero divide both side on 9 the result will be X^2 - 2X = -1 X(X - 2) = -1 and so X= -1 ............. or X-2 = -1 and so X = 1 the result is the value of x are between {-1,1}.
(x - 3x - 6) / 6 = (3x + 2) / 2 ∴2(3x + 2) = 6(3x + 2) ∴6x + 4 = 18x = 12 ∴12x = -8 ∴x = -2/3
This can be interpreted as a line in 2d space. There are an infinite number of solutions. More than likely your real question is: "How can 27y + 18x = 21 be written in standard slope-intercept form?"Same as 9y + 6x = 7 (divide both sides by 3).Solve for y:9y = 7 - 6xy = (7 - 6x) / 9, ory = (-2/3)x + 7/9We now have an eaquation of a line: slope = -2/3, y-intercept = 7/9Paste -2/3x + 7/9 into the calculator at http://www.coolmath.com/graphit/and click "Eval" to visualize it.
f(x) = -x3 + 9x2 - 15x - 10 => df/dx = -3x2 + 18x - 15 = -3*(x - 1)*(x - 5) df/dx = 0 => x = 1 or x = 5 So, the stationary points are x = 1 and x = 5
(x+y)^2+z^2=x^2+y^2+z^2+2xy or ((x+y)^2+z)^2= (x^2+y^2+2xy+z)^2= x^4+y^4+z^2+6x^2y^2+4x^3y+2x^2z^2+4xy^3+4xyz^2+2z^2y^2
For any value of x, 18x divided by 2 is always 9x.
Do you mean: factorise: 27x2-18x-18 best I can get is: 9((3x-2)-2)
6x2-18x+12 = (6x-6)(x-2)
If: 3 -18x^2 = 25x then 3 -18x^2 -25x = 0 When factored: (9x-1)(-2x-3) = 0Solutions: x = 1/9 or x = -3/2
(x+9)^2 =x^2 + 9 X^2 + 18x + 81 = X^2 +9 18X + 72 = 0 18X = -72 X =- 4
If that's + 18x + 1, the answer is (9x + 1)(9x + 1) or (9x + 1)2
(2x4) + (8x3) + 18x 8 + 24 + 18x 32 + 18x
18(2 - x)
x=4 and x =7Improved Answer:-x2-18x-40 = (x+2)(x-20) when factored
Because: (9-x)(9-x) = 81-18x+x^2
x² - 18x - 4 = o x² - 18x = 4 x² - 18x + (18/2)² = 4 + (18/2)² x² - 18x + 81 = 4 + 81 (x - 9)² = 85 x - 9 = ±√85 x = 9 ±√85 x = 9 + √85 or x = 9 - √85 if you are still confused, i want you to follow the related link that explains the concept of completing the square clearly.
11x = 20x +1811x-20x=18x(11-20)=18-9x=18x=-2