Question

Find the roots x2 + 4x + 5 = 0

Answer 1

Explanation:

`x {}^(2) + 4x + 5 \\ x {}^(2) + 5x - x + 5 = 0 \\ x(x + 5) - 1(x + 5) = 0 \\ (x - 1)(x + 5) = 0 \\ x - 1 = 0 \: \: \: \: \: \: \: x + 5 = 0 \\ x = 1 \: \: \: \: \: x = - 5`

Answer 2

Answer:-5/6

Explanation:

x*2+4x+5=0

add similar elements: 2x+4x=6x.

6x+5=0

Subtract 5 from both sides.

6x+5-5=0-5.

simplify.

6x=-5

divide both sides by 6

6x/6=-5/6

answer

-5/6