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3 years ago

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Mathematics

1 answer:

ratelena [41]3 years ago

4 0

Answer:

Step-by-step explanation:

1. x^2 + 6x = 5

x^2 + 6x + 9 = 14

(x+3)^2 = 14

x = $\sqrt{14}$ - 3

2. x^2 + 8x -4 = 0

x^2 + 8x = 4

x^2 + 8x + 16 = 20

(x+4)^2 = 20

x = $\sqrt{20}$ - 4

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