Simplify: 3 a × 24 a b.

Correct Answer is : 72a2b72 a² b72a2b

Correct Answer is : 72a2b72 a² b72a2b

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BECE Mathematics 2019 Paper

Question : 30

Total: 40

Simplify:

3 a \times 24 a b

Solution:

Concept:

Multiply the numbers first, then multiply the like variables using

a^m \times a^n = a^{m+n}

Explanation:

Write the expression as

3 \times a \times 24 \times a \times b

Multiply the coefficients:

3 \times 24 = 72

Multiply the

a

terms:

a \times a = a^1 \times a^1 = a^{1+1} = a^2

Keep

b

as it is since there is only one

b

So,

3a \times 24ab = 72a^2b

Answer:

72a^2b

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