book Maths Puzzle Numerical Ability

what is (-5y3)(-4y8)

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i need assistance on this question to do with conics::

x� +y� +2x -7 = 0 Please help me solve this:

Find the exact quotient using synthetic division:

2x^4 - x^3 -18x^2-7/x - 3

Please show the step by step solution.

Thanks