exam
Maths Puzzle
Numerical Ability
can someone PLEASE help me solve this system:
{ x+ y-4z=6
{2x-5y+3z=2
{ x-6y+7z=-4
thank you so much!
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exam Other Question
Solve the system of equations:
9^(3x-y)=(1/81)^-1
(sqrt5)^(2x-y)=1
Divide the polynomial
3x^n+6x^n-1 -2x^n-2
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2x^n-1