Question

Solve the quadratic equation x2 + 5x + 2 = 0 and give the answer correct to

2 decimal places​

Answer 1

Answer:

x = -0.438 OR x = -4.562

Step-by-step explanation:

x² + 5x + 2=0

This is a quadratic equation of the type ax² + bx + c=0 with a=1, b=5 and c=2

∴ x = [-b±√(b²-4ac)]/2a

= [-5±√(5²-4×1×2)]/2×1

=  [-5±√(25-8)]/2

=  (-5±√17)/2

x =  (-5+√17)/2 OR x =  (-5-√17)/2

x = -0.438 OR x = -4.562