exam Maths Puzzle Numerical Ability

(8x (x to the 2 power) + 8x-2)-(8x (x to 2nd power) +5) = 6x+2. Can you explain..pretty new with computer and math. Going back to school. Im stumped..please help

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in trianglePQR, andgleQ include between sides_____and______. and angleP and angleR includes sed____. Need help!!

I need to find four numbers which are divisors of 2 to the 64th power minus 1!!
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