Question

Q1 Solve 2x2-5x+3=0 by method of completing square using Quadratic formula Q2 Find the root of equation 5x2-6x-2=0 by method completing the square using Quadratic formula

Answer 1

Answer:

ans 1:-

Step-by-step explanation:

solñ 1

2x2-5x+3=0 ---------------(1)

now devide the eq(1) by 2

1/2(2x2-5x+3=0 )

x²-5/2x +3/2=0

x²-5/2x = -3/2 -------------------------(2)

a=1

b= -5/2

c=3/2

now we'll find the 3rd term

3rd term =(1/2 * b)²

= (1/2* -5/2)²

= (-5/4)²

=25/16

now add the 3rd term on both side of eq(2)

x²-5/2x +25/16 = -3/2 +25/16

(x)² -2(x)(5/4)+(5/4)² =1/16

(x + 5/4)²=1/16

x +4/5=+-√1/16

x =4/5+-1/4

so

x=4/5+1/4. or x=4/5-1/4

x=21/20. x=11/20

hope it'll help u