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den301095 [7]
3 years ago
7

What is the value of 4a3 – 2b2 + 5 when a = 3 and b = −2?

Mathematics
2 answers:
kenny6666 [7]3 years ago
8 0
4a(3)-2b(2)+5
4(3)(3)-2(-2)(2)+5
12(3)-(-4)(2)+5
36-(-8)+5
44+5
49
The answer is 49.
Fittoniya [83]3 years ago
6 0

4a3 – 2b2 + 5

= 4 * 3^3 - 2 * (-2)^2 + 5

= 4 * 27 - 2 * 4 + 5

= 96 - 8 + 5

= 93


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