book Maths Puzzle Numerical Ability

Explain how to multiply two binomials using the FOIL method.

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book Other Question

How can you detrmine whether a system has no soltion by graphing? Please show me step-by-step how to solve this for X:

(4x/x-4)+1 = 3x/x-4

A) x=2
B) x=-2
C) x=-1/2
D) x=1/2

Also can you help me find the LCD for
5y+3/y^2-81 and 6/y^2+