Question

Solve this quadratic equation using the quadratic formula. x 2 + 8x - 5 = 0

Answer 1

8x+2x=10x-5=0
X=0
-5=0
No solution

Answer 2

X² + 8x - 5 = 0

a = 1, b = 8, c = -5

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

$x = \dfrac{ -8 \pm\sqrt{8^2-4(1)(-5)} }{2(1)}$

$x = 0.58 \text{ or} -8.58 \text { (nearest hundredth)}$

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Answer: x = 0.58 or -8.58
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