book Maths Puzzle Numerical Ability

help simplify -(5x+5)-4+8x

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book Other Question

Identify the shape of the graph, transform it into standard form, and sketch the graph.
x^2 - 4y^2 + 4x -24y - 36 = 0
what is the equation of the line passing through (0,15) perpendicular to the graph of y=-3/4x+2/3???

thanks.