I would do this. Multiply through by -1 -1 ( -X^2 +12X +28 ) = X^2 -12X -28 (X+2)(X-14)
It is x = +/- 2 depending on whether the second term in the equation is -12x or +12x.
x + 12x + 20 = (x + 10)(x + 2)
Equate it to zero (0) , and you have a quadratic equation that can be factotred. Hence x^2 + 12x + 36 = 0 (x + 6)(x + 6) = 0 Hence x = -6
x2 + 12x + 32 = (x + 8)(x + 4)
The value of X in the equation 3x 2-12x plus 9 is 1.25.
An equation demonstrates the equality of two expressions. x2+12x+13 is only one expression. For example, x+y : expression, not equation x+5 = 3 : equation
(x - 1)(x - 11) x = 1,11
5x2 + 12x + 7 = 0 This equation can be factored : (5x + 7) (x + 1) = 0 The equation equals zero when either 5x + 7 = 0 or x + 1 = 0 When 5x + 7 = 0 then 5x = -7 : x = -7/5 or -1.4 When x + 1 = 0 then x = -1 The solutions or roots of this equation are x = -7/5 and x = -1
x2+12x+5 = 3 x2+12x+5-3 = 0 x2+12x+2 = 0
6x³ +12x + 18 = 6(x + 1)(x² - x + 3)
This is not an inequality. This is an equation.12x+7=43 12x=36 x=3
x2+12x+11=0 (x+11)(x+1)=0 x=-11 or x=-1
I would do this. Multiply through by -1 -1 ( -X^2 +12X +28 ) = X^2 -12X -28 (X+2)(X-14)
12x+x = 13x
6(x + 1)(x + 1)
3 - x = 12x - 1 Add x to both sides of the equation: 3 = 13x - 1 Add 1 to both sides of the equation: 4 = 13x Divide both sides of the equation by 13: 4/13 = X