exam Maths Puzzle Numerical Ability

write the equation of each root. the root is -3/4,-8. whats the answer?

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exam Other Question

A solution of 71% pesticide is to be mixed with a solution of 49% pesticide to form 44 liters of a 51% solution. How much of the 71% solution should you use? Please show me how to simplify and write answer using only positive exponents.

Thanks!

(5K^-4m^6)^-2