(0.87)3 + (0.13) Ex.2. Simplify. (0...
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(0.87)3 + (0.13) Ex.2. Simplify. (0.87)2 + (0.13)2 - (0.87 x 0.13) (1) 3 (2) 2 (3) 1 (4) 4

11th - 12th Class
Maths
Solution
170
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Sol. (3) let ( 0.87=a ) and ( 0.13=b ) [ begin{array}{l} Rightarrow frac{a^{3}+b^{3}}{a^{2}+b^{2}-a b}=frac{(a+b)left(a^{2}-a b+b^{2}right)}{left(a^{2}+b^{2}-a bright)} Rightarrow a+b Rightarrow 0.87+0.13 Rightarrow 1 end{array} ]
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