Evualuate For a = 1 1/2
(5a2−13a+4)(2a−3)
When a = 1 1/2 = 3/2,
2a=32a−3=0
(5a2−13a+4)(2a−3)=(5a2−13a+4)(0)=0
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
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?
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.
+220 
