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ECO255


Question: Evaluate (5 + 2i)(2 - i)
Answer:  8 - i

Question: Solve the equation; xy = 2, x - y 1
Answer:  x = 2, y = 1

Question: Convert 250 base 8 to base 10
Answer:  168

Question: Evaluatex + y=1,2x + y = 3
Answer:  x = 2, y = -1

Question: Venn diagrams was named after its inventor
Answer:  John Venn

Question: How many solutions does the quadratic equation have where a = 2, b = and c = 2.
Answer:  2

Question: Convert 168 base 10 to base 8
Answer:  250

Question: The addition or subtraction method for solving simultaneous equation also called the method
Answer:  Elimination

Question: Evaluate 11111 + 11111 + 11111 all in base 2
Answer:  1011101

Question: The union of sets X and Y is denoted as
Answer: [B] X u Y

Question: If angle F measures 3(15x – 45) degrees, for which of the following values of x is F obtuse? {3,4, 5, 6}.
Answer: [B] 6

Question: Evaluate (3+2i)(4+5i)
Answer:  2 + 23i

Question: Solve for x in 4(4Ax) = 16
Answer: 1

Question: If angle F measures 3(15x – 45) degrees, for which of the following values of x is F obtuse? {3,4, 5, 6}.
Answer:  6

Question: Differentiate y = (x + 5)A4.
Answer:  4(x + 5)A3

Question: Evaluate Ë/x5 + x-4dx.
Answer:  1/6x6 – 1/3x-3 + c.

Question: Solve the equation: 2x + y = 4, x + Y = 3
Answer:  y = 2, x = 1

Question: Evaluate (i+1)(i+3)
Answer: 2 + 4i



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