exam Maths Puzzle Numerical Ability

How would you solve a problem like 4x(x-2)-5x(x-1)=2? When I tried the solution was weird. Could you please help me?

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exam Other Question
i. A perimeter of a rectangle is 14 inches, and the diagonal measures 5 inches. What are the length and the width? Graph this equation:

y = -2x + 2