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tino4ka555 [31]
3 years ago
6

Find the roots x2 + 4x + 5 = 0

Mathematics
2 answers:
aev [14]3 years ago
8 0

Step-by-step 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

Evgen [1.6K]3 years ago
3 0

Answer:-5/6

Step-by-step 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

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