Question

Solve by using formula:- x = -b ± √b²-4ac/ 2a 2x^2+5x+2=0

Answer 1

Answer:

x = -6.5 or x = -3.5

Explanation:

2x²+5x+2=0

a=2, b=5, c=2

x = -b ± √b²-4ac/ 2a

x = (-5 ± √5²-4×2×2)/2×2

x = (-5 ± √25-16)/4

x = (-5 ± √9)/4

x = (-5 ± 3)/4

x = (-5 - 3)/4 or x = (-5 + 3)/4

x = -2 or x = -1/2