Solve by completing the square.x2 + 4x = 7
A. -2 ± 
B. -1 ± 
C. -2 ± 2
D. 2 + 
Answer: A
Mathematics
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Solve the equation in the complex number system.x2 + x + 7 = 0
A. 
B. 
C. 
D. 
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Write the whole number in standard form.50,000 + 800 + 10
A. 80,150 B. 50,810 C. 581,000 D. 5801
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Find the perimeter.
A. 47 in. B. 58 in. C. 144 in. D. 59 in.
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Graph the function.f(x) = 
A. 
B. 
C. 
D. 
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