exam
Maths Puzzle
Numerical Ability
Multiply:
((x^2+x-12)/(x^2-x-20))X((x^2+2x-35)/(x^2+9x+14))
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exam Other Question
can you tell me if i factored this correctly?
64x^2-1
=x(2+8)
I need help setting up an equation for the following question:
A 20L solution is 15% alcohol. How much water must be added to make it an 8% alcohol solution?