book Maths Puzzle Numerical Ability

Solve the equation using factoring techniques.

(x+50)^2-16=0

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book Other Question

express the logarithm in terms of log2 M and log2 N: log2 (M/N)^4 And aircraft carrier follows a course that has a latitude of 288 miles north and a departure of 240 miles east in two days. Find its bearing.