book Maths Puzzle Numerical Ability

3[3-3(x+1)]+1=2(-14-x)+2x+14

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I am having problems on these equations (2x+5)^2-(2x+5)-6=0 and (5x-2)^1/3=2 I am trying to find the anser to these equaisions...Please help
A(-2,8), B(10,-1)
X(-7,-1), F(-6,-1)