Solve using the quadratic formula.x + 4 = 
A. 
, -
B. -1, 9
C. 4 + 
, 4 - 
D. 
, -
Answer: D
Mathematics
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Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1
Mathematics
Determine which of the following methods is the best choice for solving the given equation: factoring, using the principle of square roots or using the quadratic formula. Then, solve the equation.x2 + x + 2 = 0
A. Square root principle or factoring; 1, 0
B. Quadratic formula; 
C. Factoring; -1, 0
D. Square root principle; 
Mathematics
Use both properties of equality to solve the equation.9x - 2 = 26 - 5x
A. 2 B. 4 C. 28 D. -2
Mathematics
Solve the problem.How many 6-symbol codes can be formed using 4 different symbols? Repeated symbols are allowed.
A. 30 B. 15 C. 4096 D. 360
Mathematics