1.

sudheer rolls a wheel along a curved line PQ.the distance of PQ is 21.4m and the wheel makes 11 rotations . what is the diameter of the wheel

Answer»

Answer:

Step-by-step EXPLANATION:

Answer:It's NOTHING to explain you just have to MULTIPLY the terms of 1st bracket in 2nd bracket. And you will get

x^2 -bx +AX -ab



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