Question

3x^2+2x-8=0
Completing the square method

Answer 1

Step-by-step explanation:

third number=( 1/2× coefficient of x )²

1/2×2=1²=1

divide all terms by 3

therefore x²+2/3x-8/3

now completing square

x²+2×1/2×2/3+1-1+8/3=0

(x+1)²- 3+8/3=0

(x+1)²-11/3=0

(x+1)²=11/3

taking √

x+1=√11/√3

therefore roots are not real