QuestionAugust 26, 2025

18. FIND THE ERROR A student is multiplying (4a^2)(5a^3) Find their mistake and correct it. (4a^2)(5a^3)=4a^2+3 =4a^5

18. FIND THE ERROR A student is multiplying (4a^2)(5a^3) Find their mistake and correct it. (4a^2)(5a^3)=4a^2+3 =4a^5
18. FIND THE ERROR A student is multiplying
(4a^2)(5a^3) Find their mistake and correct it.
(4a^2)(5a^3)=4a^2+3
=4a^5

Solution
4.2(224 votes)

Answer

20a^{5} Explanation 1. Identify the mistake The student incorrectly multiplied the coefficients. They should multiply 4 and 5. 2. Correct the multiplication of coefficients Multiply 4 \times 5 = 20. 3. Apply the exponent rule Use **a^m \cdot a^n = a^{m+n}** to combine exponents: a^{2} \cdot a^{3} = a^{2+3} = a^{5}.

Explanation

1. Identify the mistake<br /> The student incorrectly multiplied the coefficients. They should multiply $4$ and $5$.<br />2. Correct the multiplication of coefficients<br /> Multiply $4 \times 5 = 20$.<br />3. Apply the exponent rule<br /> Use **$a^m \cdot a^n = a^{m+n}$** to combine exponents: $a^{2} \cdot a^{3} = a^{2+3} = a^{5}$.
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