Find the real solutions, if any, of the equation. Use the quadratic formula.x2 + 4x - 9 = 0
A. {-2 - 1
, -2 + 1
}
B. {2 + 
}
C. {-1 - 
, -1 + 
}
D. {-2 - 
, -2 + 
}
Answer: D
Mathematics
You might also like to view...
Perform the indicated operation or operations.
+ 
A. 
B. 
C. 
D. 
Mathematics
Round as indicated.876 to the nearest ten
A. 870 B. 980 C. 890 D. 880
Mathematics
Write a fraction to represent the shaded part of the figure.
A. 
B. 
C. 
D. 
Mathematics
Graph the function f by starting with the graph of y = x2 and using transformations (shifting, compressing, stretching, and/or reflection).f(x) = 
x2 + 4
A. 
B. 
C. 
D. 
Mathematics