exam Maths Puzzle Numerical Ability

Solve the following algebraically. You must show all your work. Alternately, you may type as cuberoot(x) and show raising to the nth power as ^n, like x 3 is typed x^3.
3 cuberoot(x)-4=2

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exam Other Question

The ratio of the number of red beads to blue beads in a box was 3:1. 3 more red and 4 more beads were added and the ratio became 2:1. How many red beads were there at first? Simplify. Assume x represents a positive number square root 20*x cubed.