exam Maths Puzzle Numerical Ability

I need major help

solve each of the following quadiatic equations by completly the square.

x^2-6x-3=0

and 2x^2+10x+11=0

thanks a million

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exam Other Question

If a bus leaves a station at 1 P.M., traveling west at an average rate of 44 mi/h. An hour later a second bus leaves the same station, traveling
east at a rate of 48 mi/h. What time will the two buses be at 274 mi apart? Solve the system of equations by graphing. Then classify the system as consistent or inconsistent; and the equations as dependent or independent.

x+y=10
x-y=-6
Will someone p