exam Maths Puzzle Numerical Ability

Factor out GCF:
w(w + 2)^2 + 8(w + 2)^2

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exam Other Question

rewrite the equation -8x - 5y = -45
as a function of x. "Arctic Antifreeze" is 18%alchol and "frost No-More" is 10%alchol. How many liters of each should be mixed to get 20L of a mixture that is 15% alchol?