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Mathematics, 12.10.2020 19:01 liamgreene90
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121 38 Marks
By rounding to 1 significant figure, estimate the answers to these questions:
a)
78 x 92
b)
615 x 38
c) 423 764
(
Answers: 2
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What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?
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