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
(2x-1)^2=8
x^2-4x+4=49
(8t-3)^2=0
-(E+7)-5E+6