Solve by making a u-substitution.x4 - 6x2 + 8 = 0
A. {±2, ±2
}
B. {2, 
}
C. {±2, ±2}
D. {±2, ±
}
Answer: D
Mathematics
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B. -4 ? x < 9
C. -4 < x < 9
D. -4 ? x ? 9
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Rewrite the expression in the form A sin(x + C).3
sin x - 3 cos x
A. 3 sin 
B. 3
sin 
C. 3 sin 
D. 6 sin 
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Draw the graph of the equation.y = 
A. 
B. 
C. 
D. 
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