exam Maths Puzzle Numerical Ability

Simplify the expression x(2-x) - x(3-x).

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exam Other Question

Does anyone know how to do this?

Factor completely. x^4 +x^2 -12 Graph each of the following equations.
(20) y = 3/4x+2

Graph each of the following equations, using the intercept method.
(28) 2x +3y = 6

Graph each of the following equations, by first solving for y.
(34) 2x-3y=12