3 years ago

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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