exam Maths Puzzle Numerical Ability

m^4+4m^2-12=0



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exam Other Question
Find the range:
y = 2x + 3 use {0, 1, 2, 3} as the domain Solve these simultaneous equations:

2log(2)y = log(4)3 + log(2)x

3^y = 9^x

given that x and y are positive

I have no idea how to even begin to solve this