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masya89 [10]
3 years ago
15

12a-3b2, when a=9,b=4

Mathematics
2 answers:
Archy [21]3 years ago
4 0

Answer:

12a - 3 {b}^{2}  = 12(9) - 3 {(4)}^{2} \\   = 108 - 48 \\  = 60

yarga [219]3 years ago
4 0

Answer:

60

Step-by-step explanation:

Just substitute the value

12\cdot (9) - 3 \cdot(4)^2 = \\108 - 48 =60

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