Solve the equation by factoring.x2 + 9x - 36 = 0
A. x = -12 or x = 3
B. x = -12 or x = 1
C. x = 12 or x = -3
D. x = 12 or x = 3
Answer: A
Mathematics
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Matrix A is given. Find appropriate identity matrices Im and In such that ImA = A and AIn = A.A = 
A. Im = 
, In = 
B. Im = 
, In =
C. Im = 
, In = 
D. Im = In = 
Mathematics
Solve the equation.x2 + 7x = 44
A. {-11, 1} B. {4, 11} C. {-4, 11} D. {-11, 4}
Mathematics
Solve the formula for the specified variable.
+ 
= 
for c
A. c = 
B. c = ab(a + b)
C. c = 
D. c = a + b
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics