exam Maths Puzzle Numerical Ability

please simplify (K^2)^4

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exam Other Question

Find the equation (in standard form) of the line through (1, �7) and (4, �1). Match your result to the correct answer below.
A) 2x + y = 9
B) x-2y=18
C) 2x � y = 9
D) x-2y=9

x^2-(x-4)