Question

1. Solve the equation m2 + 6m=-4 using the quadratic formula.

Answer 1

Answer:

-3± √5

Step-by-step explanation:

It is given that,

m² + 6m = -4

Points to remember

Solution of a quadratic equation ax² + bx + c = 0

x = [-b ± v(b² - 4ac)]/2a

To find the solution of given equation

m² + 6m = -4

⇒ m² + 6m  + 4 = 0

Here a = 1, b = 6 and c = 4

m =  [-b ± v(b² - 4ac)]/2a

  =  [-6 ± √(6² - 4*1*4)]/2*1

  = [-6 ± √(36 - 16)]/2

  = [-6 ± √20]/2

  = [-6 ± 2√5]/2

 = -3± √5