exam Maths Puzzle Numerical Ability

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|7x - 2| > -8

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exam Other Question

Add or subtract. Assume all variables represent positive real numbers

/3x^2 - 3/48x^2 - 2/48x^2 (radical equations) given that logbase4^(y-1)+logbase4^x/2=a and logbase2^(y+1)-logbase2^x=a-1.
show that y^2=1+8^a and find the possible value of x and y when a=1
(text book:basic mathematics for s