exam Maths Puzzle Numerical Ability

May I have some help with the following equation?

Find all real solutions of the equation.

7x^3-x+1=x^3+3x^2+x

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exam Other Question

Find the slope and y- intercept of the line represented by the following equations.




problem 12:



2x- 3y = 6
find the equation that is perpendicular to line AB and line CD and goes through the midpoint