QuestionAugust 26, 2025

Question Evaluate 7m^2+5n^2 when m=2,n=3 Provide your answer below:

Question Evaluate 7m^2+5n^2 when m=2,n=3 Provide your answer below:
Question
Evaluate 7m^2+5n^2 when m=2,n=3
Provide your answer below:

Solution
4.5(245 votes)

Answer

73 Explanation 1. Substitute the values Replace m with 2 and n with 3 in the expression 7m^{2}+5n^{2}. 2. Calculate m^2 m^2 = 2^2 = 4 3. Calculate n^2 n^2 = 3^2 = 9 4. Evaluate 7m^2 7 \times 4 = 28 5. Evaluate 5n^2 5 \times 9 = 45 6. Add results 28 + 45 = 73

Explanation

1. Substitute the values<br /> Replace $m$ with 2 and $n$ with 3 in the expression $7m^{2}+5n^{2}$.<br />2. Calculate $m^2$<br /> $m^2 = 2^2 = 4$<br />3. Calculate $n^2$<br /> $n^2 = 3^2 = 9$<br />4. Evaluate $7m^2$<br /> $7 \times 4 = 28$<br />5. Evaluate $5n^2$<br /> $5 \times 9 = 45$<br />6. Add results<br /> $28 + 45 = 73$
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