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Inessa [10]
2 years ago
7

Solve for x in the equation x² + 14x + 17 = - 96

Mathematics
1 answer:
gavmur [86]2 years ago
4 0

Answer:

Solutions of x are;

x = -7 + 8i and x = -7 -8i

Step-by-step explanation:

Given the equation: x^2+14x+17 = -96

Add 96 both sides we get;

x^2+14x+17+96 = 0

x^2+14x+113= 0

Using quadratic formula ax^2+bx+c = 0 then the solution is given by:

x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}

On comparing we have;

a= 1,  b =14 and c =113

x = \frac{-14\pm\sqrt{(14)^2-4(1)(113)}}{2(1)}

x = \frac{-14\pm\sqrt{196-452}}{2}

or

x = \frac{-14\pm\sqrt{-256}}{2}

Simplify:

x = \frac{-14\pm 16i}{2} ;  where i is the imaginary, i^2= -1

or

x = -7 \pm 8i

Therefore,  the solution of x are;  x = -7 + 8i and x = -7 -8i

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