Question

What is 3x minus x squared

Answer 1

Answer:

x = 3 , x= 0

Step-by-step explanation:

Given:

3x minus x squared

To Find;

The value of X= ?

Solution:

3x minus x squared = $3x -x^2$

Writin in the standard form, we get

$-x^2 +3x + 0$

Now lets us the quadratic formula to find the value of x

x = $\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

here  

a =  -1

b = 3

c = 0

On substituting the values

x = $\frac{-3 \pm \sqrt{(3)^2 -4(-1)(0)}}{2(-1)}$

x = $\frac{-3 \pm \sqrt{9 -0}}{-2}$

x = $\frac{-3 \pm \sqrt{9 }}{-2}$

x = $\frac{-3 \pm 3}{-2}$

x = $\frac{-3-3}{-2}$                                      x = $\frac{-3+3}{-2}$

x =$\frac{-6}{-2}$                                           x =$\frac{0}{2}$

x = 3                                            x = 0

Thus x = 3 or x = 0