Use the formula - a-b a-b - a2 - b2 to evaluate - 4-6 - 5-4

4.6 × #160; 5.4 = (5 0.4) × (5 + 0.4) = [5^2 (0.4)^2] (∵ (a + b) (a b) = a^2 b^2 ) #160; = 25 0.16 = 24.84 ...

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Algebraic Identities

Use the formu...

Question

Use the formula : $(a + b) (a - b) = a^{2} - b^{2}$ to evaluate :
$4.6 \times 5..4$

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