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jarptica [38.1K]
3 years ago
6

Given the functions f(x) = - 4x - 1 and g(x) = 2x + 4, which operation results in the smallest coefficient on the x term?

Mathematics
1 answer:
VikaD [51]3 years ago
6 0
Perform the operation in the choices to determine the coefficients of the terms.

(Addition)            -4x - 1 + 2x + 4    = -2x + 3
(Subtraction)       -4x - 1 - (2x + 4)  = -6x - 5
(Multiplication)    (-4x - 1)(2x + 4)   = -8x² -18x -4

Thus, the answer is multiplication as it gives a numerical coefficient equal to -18. 
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The square root of  (64/225)  is the same as  √64 / √225 . 
That could make the whole thing easier.

Do you know what either of those separate square roots is ?

You're right !    I'm so impressed!
The square root of  64  IS  8, and the square root of  225 surely is  15 .
You really know your stuff !

So now, the expression is  √64 / √225  =  <em>8 / 15</em> .

Oh, I almost forgot, it has a negative sign before it.  OK,so the answer is <em>- 8/15</em> .

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