Question

if 9n²+25m²=181 and mn=-6, then the value of 3n+5m=?​

Answer 1

Answer:

9n²+25m²=181

(3n+5m)²-2mn=181

(3n+5m)²+12=181

(3n+5m)²=181-12

3n+5m=√169

3n+5m=13

Answer 2

Step-by-step explanation:

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