exam Maths Puzzle Numerical Ability

Simplify each expression. Rationalize all denominators. Assume that all variables are positive.

cube root of 2x times cube root of 4 times cube root of 2x square

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exam Other Question

Please help me;
Solve the equation 4^2x+1=2^3x+6 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 must you use?