exam Maths Puzzle Numerical Ability

the square of a number decreased by 6 is 10. find the numbers.

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exam Other Question

what is -6z-14+26+2z=-12=8? i need the steps shown! thank you very much! 9x-4y=8
4y-9x=-8
consistant or inconsistant
dependant or independant

What is the solution of the system of equations
a. infinetly many solutions
b. a point
c. no solution