quadratic equation of 5x²+4√10+8=0
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How do you solve 5x2−8x−4=0 using the quadratic formula?
Algebra Quadratic Formula
1 Answer

seph
Jun 4, 2016
x=2, x=−25
Explanation:
The quadratic formula states that given a quadratic equation
ax2+bx+c=0
Its roots can be obtained using the equation below
x=−b±√b2−4ac2a
5x2−8x−4=0
⇒x=−(−8)±√(−8)2−4(5)(−4)2(5)
⇒x=8±√64+8010
⇒x=8±√14410
⇒x=8±1210
⇒x=2010⇒x=2
⇒x=−410⇒x
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