Indices 4

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Write a in terms of b for: a = 9x + 5 and b = 3 - 3x

Solution: b = 3 - 3x

=> 3x = 3 - b

And, a = 9x + 5

=> a = (32)x + 5

=> a = (3x)2 + 5

By replacing value of 3x in a , we get a in terms of b as:

a = (3 - b)2 + 5

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