Solve the equation by making an appropriate substitution.x4 - 2x2 - 63 = 0
A. {3, i
}
B. {-3, 3, -i
, i
}
C. {- 
, 
, -3i, 3i}
D. {-9, 7}
Answer: B
Mathematics
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First round each number to one non-zero digit. Then perform the calculation using the rounded numbers to obtain an estimate.318.44 ÷ (41.9)
A. estimate: 7.5 B. estimate: 8.5 C. estimate: 7.6 D. estimate: 8
Mathematics
Multiply.6(-8)
A. -38 B. -96 C. 48 D. -48
Mathematics
Write the partial fraction decomposition of the rational expression.
A. 
+ 
B. 
+ 
+ 
C. 
- 
+ 
D. 
+ 
+ 
Mathematics
Simplify.-( -( -( -n))) for n = -6
A. 7 B. -6 C. 6 D. -7
Mathematics