book Maths Puzzle Numerical Ability

please assist in multipling these polynomials.(1x^3/3 + 1y^3)/4) (1x/5+1y/2-1)= thank you in advance for you help.

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book Other Question

how can we find quadratic function if the information below is given;

minimum coordinate (2,3), crossing (4,4)

tq.
Entrance to the fair costs $1.00. Each ride at the fair requires a ticet which costs $3.00.
David spends LESS THAN $10.00. WRITE and SOLVE an inequality to represent the number