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erma4kov [3.2K]
3 years ago
11

Evaluate 4(a2 + 2b) - 2b when a = 2 and b = -2. DONE

Mathematics
1 answer:
PolarNik [594]3 years ago
5 0

Answer:

4

Step-by-step explanation:

Firstly simplify your brackets...,

; 4(a^2 + 2b) = 4a^2 + 8b...then substitute it onto the bracket

; 4a^2 + 8b - 2b

; 4a^2 + 6b....,then substitute with the given values of a and b

; 4(2)^2)+ 6(-2)

; 16 - 12 = 4

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what fraction of a clockwise revolution does the hour of a clock turn through when it goes from a) 4 to 7 b) 8 to 2 c) 1 to 10 ​
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Step-by-step explanation:

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