book Maths Puzzle Numerical Ability

whats the quadratic eqation for perabola
vertes: (-1,-10)
x-intercepts:-6and 4

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book Other Question

please simplfy this
(4x^3-6x^2+5)-(x^2+7x^2-8x-2) There is a line (L1) that passes through the points (8,-3) and (3,3/4)

There is another line (L2)with slope M=2/3 that intersects L1 at the point
(-4,6)

What is the point of interectstion of line L1 and L2