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10 questions from this quiz
b−a=c−bb - a = c - bb−a=c−b
b2=acb^2 = acb2=ac
x=10x = 10x=10
x=4x = 4x=4 or x=−4x = -4x=−4
Subtraction
Division
Average of the outer two terms
Tn=arn−1T_n = ar^{n-1}Tn=arn−1
Target value is relatively small
Divide T6T_6T6 equation by T4T_4T4 equation
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