Evaluate (2.3a5b2) × (1.2a2b2) when a = 1 and b = 0.5

1.	Evaluate (2.3a5b2) × (1.2a2b2) when a = 1 and b = 0.5
Answer» Let us simplify the given expression = 2.3a⁵b² × 1.2a²b² = 2.3 × 1.2 × a⁵ × a² × b² × b² = 2.76 × a⁵⁺² × b²⁺² = 2.76a⁷b⁴ Now let us substitute when, a = 1 and b = 0.5 For 2.76 a7 b4 = 2.76 (1)⁷ (0.5)⁴ = 2.76 × 1 × 0.0025 = 0.1725 = 6.9/40

Answer»

Let us simplify the given expression

= 2.3a⁵b² × 1.2a²b²

= 2.3 × 1.2 × a⁵ × a² × b² × b²

= 2.76 × a⁵⁺² × b²⁺²

= 2.76a⁷b⁴

Now let us substitute when, a = 1 and b = 0.5

For 2.76 a7 b4

= 2.76 (1)⁷ (0.5)⁴

= 2.76 × 1 × 0.0025

= 0.1725

= 6.9/40

Discussion

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