x2 + 12x - 5 = 0
x2 + 12x - 5 + 5 = 0 + 5
x2 + 12x = 5
x2 + 12x + (12/2)2 = 5 + (12/2)2
x2 + 12x + (6)2 = 5 + 36
(x + 6)2 = 41 (square root of both sides)
x + 6 = ± √41
x + 6 - 6 = -6 ± √41
x = -6 ± √41
x ≈ -6 + 6.4 = -0.4
x ≈ -6 - 6.4 = -12.4
No. It is a quartic equation. The largest power of x in a quadratic equation must be 2.
It has one real solution.
It is a quadratic equation in the one variable.
Set the equation equal to zero. 3x2 - x = -1 3x2 - x + 1 = 0 The equation is quadratic, but can not be factored. Use the quadratic equation.
the first step in solving the equation is to subtract the nine from the three. you will get negative 6.
Because when your solving a quadratic equation your looking for x-intercepts which is where why equals 0 and x equals what ever the answer is.
It means you are required to "solve" a quadratic equation by factorising the quadratic equation into two binomial expressions. Solving means to find the value(s) of the variable for which the expression equals zero.
No. [ y = 4x2 ] is a quadratic equation.
an equation has an equals sign.
2x2-10+7 = 0 Solving the quadratic equation using the quadratic formula will give you two solutions and they are: x = (5 - the square root of 11)/2 or x = (5 + the square root of 11)/2
It is a quadratic equation and its solutions can be found by using the quadratic equation formula.
That looks like a linear equation (no quadratic or higher terms), so you can expect it to have a single solution. However, actually solving the equation is not difficult; do it, to confirm this.
No
No. It is a linear equation (y = 5/2 x + 5). A quadratic equation requires a squared term, for example y = x2 + 5x + 6; this can be solved for x given y = 0, as in solving x2 + 5x + 6 = 0.
It is a quadratic equation that has 2 solutions
It can't be solved because its discriminant is less than zero
No. It is a quartic equation. The largest power of x in a quadratic equation must be 2.