Page 5 - 10-Math-1 QUADRATIC EQUATIONS
P. 5
11..QQuuaaddrraatticicEEqquuaatitoionnss eeLleeaarrnn..Ppuunnjjaabb
(ii) Adding the square of 1/2x coefficient of x, that is, on both sides
of equation (ii), we get
∴ 4 and -1 are the roots of the given equation.
Thus, the solution set is {-1, 4}.
Remember that: For our convenience, we make the
co-efficient of x2 equal to 1 in the method of completing square.
Example 2: Solve the equation 2x2 - 5x - 3 = 0 by completing square.
Solution: 2x2 - 5x - 3 = 0
Dividing each term by 2, to make coefficient of x2 equal to 1.
5 Version 1.1
