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Maths Puzzle
Numerical Ability
7p+7=9-p
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book Other Question
solve each equation and check for extraneous solutions
sqrt 2x^2-1=x
and
sqrt x^2+5x=6
solve the following systems of equations
2x + 4y + 6z = 2
x + 2z = 0
2x + 3y - z = -5