exam
Maths Puzzle
Numerical Ability
how do you solve:
r + s + 2t - u = -3
2r + 3s + 3t + u = 2
4r + 2s - t + u = 5
s + 2t + 2u =7
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exam Other Question
I am having a hard time breaking this one down.
x^4+X^3-8^2+x-6/x^2+1
Solve the following equations for x by the square root method
64x2=25
That equation is 64x squared = 25. Please help. I am totally confused!!!