Simplify (4.2)3 – (1.2)3/(4.2)2 + 5.04 + (1.2)2
Simplify Optionsa) 2b) 3c) 5d) 1 Solution Let a = 4.2b = 1.2ab = 5.04Formula :a3 – b3 = (a-b) (a2 +ab + b2) = (a-b)(a-b) = (4.2 – 1.2) = 3 Ans: 3
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