QUADRATIC EQUATIONS
Solve ax2 + bx + c = 0 by completing square method.
Sol:
ax2 + bx + c = 0
ax2 + bx + c = 0
Coefficient of 1st term is not 1
Dividing throughout by a, we get
1) Coefficient of first term should be 1
2) Constant on the RHS
…………(i)
3) Find the third term
Third term =
=
=
=
4) Add third term on both the sides
5) Express L.H.S. in square form.
6) Take square root & write the solution
This is the formula
to find value of ‘x’
Same denominator, take it common
Divide ‘a’ by ‘a’
to make it 1