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3 years ago

Solve the equation. X^2 + 22x = -40 The solutions to the equation are

Mathematics

1 answer:

elena-14-01-66 [18.8K]3 years ago

3 0

Answer:

$x_{1}=-2$

$x_{1}=-20$

Step-by-step explanation:

$x^2 + 22x = -40$

$x^2 + 22x+121 = -40+121$

Completing Square:

$(x+11)^2=81$

$x+11=\pm\sqrt{81}$

$x=-11\pm9$

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