Question

find the value of b²-4ac,if a=2,b=-8 and c=5
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Answer 1

Given: a = 1, b = 8, c = 15

b2 – 4ac = 82 – 4 × 1 × 15

= 64 – 60

∴ b2 – 4ac = 4

Answer 2

Answer:

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