11^2 = 121
sq root 143 rounded to nearest unit is 12
so (3×121)/12 is approx to (3×120)/12 = 30
Answer:
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Step-by-step explanation:
1. Original Equation:
2.Simplify:
3.Apply exponent rule:
4. Simplify:
5.Apply exponent rule:
6.Simplify: