Determine whether the values given against each of the quadratic equation are the roots of the equation. x² + 4x - 5= 0, x =1 -1
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No, x = 1, -1 are not the roots of the given equation. The actual root of given equation x = 1, -5
Step-by-step explanation:
equation = x² + 4x - 5= 0
a = 1 b=4 c= -5
D = b² - 4ac
(4)² - 4(1)(-5)
16 + 20
D = 36
x = -b + root D/ 2a , -b - root D/ 2a
-4+6/2 , -4-6/2
x = 1, -5
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