Write the function in standard form and find the vertex.f(x) = x2 + 10x
A. f(x) = (x - 5)2 - 25; (5, -25)
B. f(x) = (x + 5)2 - 25; (-5, -25)
C. f(x) = (x + 25)2 + 5; (-25, 5)
D. f(x) = (x - 25)2 - 5; (25, -5)
Answer: B
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A. 
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B. 
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C. 
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D. 
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Solve the inequality.(x - 1)(x + 6) < 0
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