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iris [78.8K]
3 years ago
11

72. Evaluate 5a + 3a2 when a = - 3

Mathematics
2 answers:
SSSSS [86.1K]3 years ago
7 0

5a + 3 {a}^{2}  \\  = 5( - 3) + 3( { - 3}^{2} ) \\  =  - 15 + 3(9) \\  =  - 15 + 27 \\  = 12

I hope I helped you^_^

Mice21 [21]3 years ago
5 0

Answer:

12

Step-by-step explanation:

5a + 3a^2 when a = -3

~Substitute

5(-3) + 3(-3)^2

~Simplify

-15 + 3(9)

-15 + 27

12

Best of Luck!

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