exam Maths Puzzle Numerical Ability

I need help simplifying this rational expression: x+4(over)2x^2 + 5(over)10x

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exam Other Question

Given the two points (4,6) and (8,18) write the point slope form and slope intercept form of the line. how i can graph 5x+2y+6=0
i rewrite the equation to y=-5/2x-3
the y intercpet is -3
the slope is-5/2
the x intersept is -6/5