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Nina [5.8K]
2 years ago
12

If a = -3, find the value of a) 2a b) a^2 c) 3a^2

Mathematics
2 answers:
White raven [17]2 years ago
8 0

Answer:

a) -6

b) 9

c) 27

Step-by-step explanation:

2( - 3) =  - 6 \\  { - 3}^{2}  =  - 9 \\ 3 {( - 3)}^{2}  =  27

Virty [35]2 years ago
3 0

\textbf{a)}\\\\2a=2(-3) = -6\\\\\textbf{b)}\\\\a^2 = (-3)^2 = 9\\\\\textbf{c)}\\\\3a^2 = 3(-3)^2 = 3 \cdot 9 = 27

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