exam Maths Puzzle Numerical Ability

Please find the unknown in the equation using steps

log2 1056 = log2(2^a+5 plus 2^a)

Please note that the 2 in the "log2 1056" is small

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exam Other Question
I have just started on equation substitutions. They are very confusing, and my entire 10th grade class is struggling. can you help me solve this substitution?

4x+y=-2 2x=-y Factor: y2 – 64
A) (y – 8)(y + 8)
B) (y – 8)2
C) (8 – y)(8 + y)
D) The expression is prime.