To solve the quadratic equation x2−11x+28=0, We can use factoring mathod or the quadratic formula.
factor the quadratic equation x2−11x+28=0
This factors into:
(x−4)(x−7)=0
Now, set each factor equal to zero:
x−4=0 or x−7=0
Solving each equation:
For x−4=0, adding 4 to both sides gives x=4.
For x−7=0, adding 7 to both sides gives x=7.
So, the solutions to the quadratic equation are x=4 and x=7.
OTHER WAY
Given quadratic equation is x2−11x+28=0
On splitting the middle terms, we get
x2−(7+4)x+28=0
x2-7x-4x+28=0
x(x-7)-4(x-7)=0
(x-7)(x-4)=0
x-7=0 and x-4=0
Therefore, x=7 and x=4
x=7,4