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Evualuate       For a = 1 1/2                 

 

\(\begin{align*} (5a^2 - 13a + 4)(2a - 3) \end{align*}\)

 Apr 21, 2019
 #1
avatar+7763 
+1

When a = 1 1/2 = 3/2,

\(2a = 3\\ 2a - 3 = 0\)

 

 

\((5a^2-13a+4)(2a - 3) = (5a^2-13a+4)(0) = 0\)

.
 Apr 21, 2019
 #2
avatar+128 
-2

To evaluate this expression, let's first start with 2a-3. We know a = 3/2. Thus, 2a - 3 is 3 - 3 which is 0. We know anything times 0 is 0 so...

 

...the answer is 0!!

 

~~Hypotenuisance

 Apr 21, 2019
 #3
avatar
+1

 0!! Is the double factorial of zero (0), and that equals one (1)

0!! =1

 

Are saying the answer is one (1), or are you related to Mr. !!!BB?

Guest Apr 21, 2019
 #4
avatar+106981 
+1

Hi Hypotenuisance,

What guest is telling you is that the exclamation mark ! has a mathematical meaning of its own.

So do not use it the way that you just did.      wink

Melody  Apr 22, 2019

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