book Maths Puzzle Numerical Ability

Here are 3 questions that I am stuck on can you help? Thanks

Explain in your own words how to reverse FOIL when factoring a polynomial of the form ax + bx +c when a =1. Give an

Read Solution (Total 0)

book Other Question

Sir i need your help, i truly stumped with this one..
How many grams of an alloy containing 35% nickel must be melted with an alloy containing 65% nickel in order to obtain 20 g This is called a Literal Equation.
Solve (x+7)(y+4)=5 for x in the form x=ay+b/y+c