Evaluate the expression for the given quantity -9.8t^2 + 20t + 8 for t = -2, 0, 3.5
1 answer:
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Answer:
x = ± 2i
Step-by-step explanation:
The equation has no real roots, gut has complex roots
Given
x² = - 4 ( take the square root of both sides )
x = ±
= ±
[ Note that = i ]
= ± ×
= ± 2i