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Jamb 2015 Mathematics Past QuestionsQuestion 121:Calculate the value of x and y if (27x ÷ 81x+2y = 9 ,x + 4y = 0 A. X = 1, y = 1/2 B. X = 2, y = — 1/2 C. X − 0, y = 1 D. X = 2, y = —1 Question 123:If √ (2x + 2) − √x =1 ,find x. A. X = 1 twice B. X = 0 or 1 C. X = 3 or 1 D. X = 2 twice Question 124:The sum of two numbers is 5; their product is 14. Find the numbers. A. X = 5 or 1 B. X = 7 or 1 C. X = 7 or 0 D. X = 7 or − 2 Question 125:Solve the equation \( 5^{(x − 2)} = (1 ÷ 125)^{(x +3)}\) A. 3/2 B. − 7/4 C. 4/7 D. 7/4 |
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