Solve the quadratic equation by the square root property. If possible, simplify radicals or rationalize denominators.(x + 7)2 = 20
A. {-7 ± 2
}
B. {±2
}
C. {-7 ± 2
}
D. {2
± 7}
Answer: C
Mathematics
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What will be an ideal response?
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Find the sum of the series.
A. 
B. 
C. 
D. 
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Use the fact that the trigonometric functions are periodic to find the exact value of the expression. Do not use a calculator.tan 
A. -1
B. 
C. 
D. 1
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Simplify.-(-|-(-7)|)
A. -7 B. -1 C. 1 D. 7
Mathematics