Solve by extracting square roots.x2 = 20

A. {±2}
B. {±10}
C. {}
D. {400}


Answer: A

Mathematics

You might also like to view...

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