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3 years ago

8

Simplify. 3/4−4z+5/4z−1/2+1/2z Enter your answer in the box.

1 answer:

Nina [5.8K]3 years ago

8 0

3/4-4z+5/4z-1/2+1/2z
(simplify fractions by taking away)3/4-1/2=1/4
(simplify again but only fraction with a denominator of z)5/4z+1/2z=7/4z
so its 1/4+7/4z-4z

OR

I don't know if you're supposed to change by taking away 4z which is the same as 1/4z.
if so then
7/4z(previous calculation but you can use the beggining fractions if you want just add all 3 fractions with z as a denominator)-1/4z=6/4z
so its 1/4+6/4z

I don't know the others sorry

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$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \tt \rightarrow \: x = 3$

____________________________________

$\large \tt Solution \: :$

$\qquad \tt \rightarrow \: log_{2}(x - 1) log_{2}(x + 5) = 4$

$\qquad \tt \rightarrow \: log_{2} \{(x - 1)(x + 5) \} = 4$

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The only possible value of x is 3, since we can't operate logarithm with a negative integer in it.

$\qquad \tt \rightarrow \: x = 3$

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

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