hi......there i uploaded slides of quadratic equation

1. Quadratic
equation
By: MEMONA
Roll no: 71

2. definition:
 An equation which contains the square of
unknown (variable) quantity but not high
power are called quadratic equation or an
equation of second degree.

3. Formula:
 Its formula is:
X=
−𝑏± 𝑏2−4𝑎𝑐
2𝑎
Equation:
ax²+bx+c=0

4. methods
1. By factorization
2. By completing square
3. By quadratic formula

5. Example:
 3x²-6x=x+20
Standard form is 3x²-6x=x + 20
Here; a=3 b=-7 c=-20 and ac=3×-20=-60
As -12+5=-7 and -12 × 5=-60
Equation can be written as:
3x²-12x+5x-20=0
3x(x-4)+(x-40)=0
Answer: x-4=0 , 3x+5=0
S . S = {4,-3/5}