Question

PLEASE HELP QUICK!!

Answer 1

The next step Javier needs to take in order to evaluate the expression is to simplify it to it's lowest term. Details below

Data obtained from the question

• Expression = 2a³ - 1
• Evaluation =?

How to evaluate the expression

From the question given, we were told that Javier submitted 2 for a

Thus, the new expression becomes

2 × 2³ - 1

Recall

Aⁿ × Aᵐ = Aⁿ⁺ᵐ

Thus,

2 × 2³ = 2¹⁺³ = 2⁴

Therefore,

2 × 2³ - 1 = 2⁴ - 1

But

2⁴ = 16

Thus,

2⁴ - 1 = 16 - 1

2⁴ - 1 = 15

Therefore,

2 × 2³ - 1 = 15

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