If a - 1a =7,then a2 + 1a2 =?

More Questions from Simplification

• If 'Q ' means ' +', 'J ' means ' X',T ' ' means '- ' and 'K ' means ' ÷ ', then what is the value of18K3Q7J ?
• Out of the 60 students of a class, 29 took Mathematics, 32 took Biology and 8 took none of the two subjects. How many students took both Mathematics and Biology?
• ( 1155 ) +(18 − 6) × 9 =?
• In the following question, correct the equation by interchanging two signs. 4 x 3 – 6 ÷ 2 + 7 = 8
• If x = 6+26 , then what is the value of x-1 + 1x-1 ?
• If a + b + c = 27, then what is the value of (a – 7)3 + (b – 9)3 + (c – 11)3 – 3(a – 7)(b – 9)(c – 11) ?
• What is the smplified value of Sin2A/1+Cos2A ?
• What is the simplified value of Sec ACot A + Tan A2 ?
• The mode of the data -3, 4, 0, 4, -2, -5, 1, 7, 10, 5 is
• Given that tan(θ + 15°) = √3. Then the value of θ is?

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