book Maths Puzzle Numerical Ability

Use FOIL to multiply:
(5x - 8)(x - 7)

ANY HELP :)

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book Other Question

Solve using the quadratic equation:
x^2 - 3x - 23 = 5

3x^2 - 2x = 15x - 10 Two similar triangles have sides in the ratio of 4:5. What is the ratio of their perimeters?

A regular square pyramid has a base with edges 16 and height 15. What is the volume and surface area of the pyramid?