exam Maths Puzzle Numerical Ability

Solve x^2=-6x
A) 0,6
B)6,-6
c)2,6
D)0,-6

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exam Other Question

2x-1 / x^2 + x - 6 - x+2 / x^2 + 5x + 6 Lauren has $1000 made up of only ten and twenty dollar bills. She has a total of 75 bills. How many of each kind does she have?