exam Maths Puzzle Numerical Ability

What formulas did the Egyptians use to create their formulas? What formulas did
the South Americans use to make their pyramids? Where did you find it?

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exam Other Question

please help me simplify each expression
reduce all fractions.

(5x)^2(2x)^0
____________
25x^5
Simplify:


Add: (3x to 2nd power - 5x to 3rd power - x) -2(x to 3rd power - 3x + 4)

Multiple (3x -5)(7x -5)