Find an equivalent expression by factoring.ar - as + at
A. a(r + s + t)
B. ar(1 - s + t)
C. a(r - s + t)
D. r(a - s + t)
Answer: C
Mathematics
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Give a geometric description of the set of points whose coordinates satisfy the given conditions.y2 + z2 = 2, x = -3
A. The line tangent to the circle y2 + z2 = 2 at the point x = -3
B. The cylinder with the radius 
along the x-axis
C. The circle y2 + z2 = 2 in the plane x = -3
D. All points more than 
units from the origin
Mathematics
Simplify the root.- 
A. x5
B. - 
C. 
D. -x5
Mathematics
Rewrite the expressions with rational exponents as radical expressions, and then solve the equation.(x2 - 3)1/2 - (x + 3)1/2 = 0
A. {-3, 3} B. {-3} C. {2, 3} D. {-2, 3}
Mathematics
Evaluate the expression.7-2
A. - 
B. -49
C. 
D. 49
Mathematics