Factor the perfect square trinomial.x2 - 20x + 400
A. (x + 20)2
B. (x + 20)(x - 20)
C. (x - 20)2
D. prime
Answer: D
Mathematics
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A. log10 (x + 4)
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D. (log10 x)(log10 4)
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Combine like terms.4
t + 1
t
A. 5
t
B. 6
t
C. 5
t
D. 5
t
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A. 90° B. 45° C. 135° D. 180°
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