Question

9.
If m=3 and n=2 find the value of
(1) 9m2 - 10n; (ii) 2m?n? (iii) 2m + 3n? - 5m?n
-5​

Answer 1

Answer:

1.9m^2-10n

9×3×3-10×2

81-20

61

2.2m?n?

2×3×2

12

3.2m+3n?-5mm?n-5

2×3+3×2-5×3×2-5

12-30-5

7-30

23

Step-by-step explanation:

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