exam Maths Puzzle Numerical Ability

(6x+2)^1/3 - 4 = 3

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exam Other Question

Please help 2x^2-2y^2 over3x^2 y^2 multiplied by 4x^2 y-4xy^2 over 6x^2+6xy

2x^2-2y^2.....4x^2 y-4xy^2
---------..X..------------
3x^2 y^2......6x^2+6xy

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The equation h=-16squared +112t gives the height of an arrow, shot upward from the ground with an initial velocity of 112 ft/s, where t is the time after the arrow leaves the groun