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Aleks04 [339]
3 years ago
15

I don' need sleep i need answers x2+10x= -9 x2-14x+40=-5

Mathematics
1 answer:
soldier1979 [14.2K]3 years ago
3 0

Answer:

x = -1, -9.

x = 5, 9.

Step-by-step explanation:

x^2 + 10x =  -9

x^2 + 10x + 9 = 0

(x + 1)(x + 9) = 0

x = -1, -9.

x^2 - 14x + 40 = -5

x^2 - 14x + 45 = 0

(x - 5)(x - 9) = 0

x = 5, 9.

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We have that
<span>triangle ABC
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using a graph tool
see the attached figure

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