Solve by extracting square roots.x2 = 20
A. {±2
}
B. {±10}
C. {
}
D. {400}
Answer: A
Mathematics
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Multiply.(x2 - x - 8)(x - 1)
A. x3 - 2x2 - 8x + 8 B. x3 - 7x + 8 C. x3 - 2x2 - 7x + 8 D. x3 - 2x2 - 9x - 8
Mathematics
Use half-angle identities to find the exact value of the expression.cos 165°
A. - 
B. - 
C. 
D. 
Mathematics
Simplify using the quotient rule, if possible.
A. 
B. 1
C. m2
D. Cannot be simplified
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics