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alexandr1967 [171]
3 years ago
12

What is the value of this expression when a = 4, b = -5, and c = -7?

Mathematics
1 answer:
Ganezh [65]3 years ago
8 0

Answer:

The value of the given expression is -878.08.

Step-by-step explanation:

Here, the given question is INCOMPLETE.

The complete question is:

Evaluate the expression for a = 4, b = -5, and c = -7. 4a^2b^{-2}c^3

Here, substitute the vale of a  = 4, b = -5 and c = -7, we get:

4a^2b^{-2}c^3  = (\frac{4a^2c^3}{b^2})  =  (\frac{4(4)^2(-7)^3}{(-5)^2})\\= (\frac{64 \times 343}{25})   =\frac{21,952}{25} =   878.08\\\implies 4a^2b^{-2}c^3 =   878.08 ( a = 4, b = -5 ,c = -7)

Hence, the value of the given expression is -878.08.

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