MHB V.02.Binary operator by a*b=a+8b

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The binary operator * is defined as a*b = a + 8b. Calculations for specific values show that 3*5 equals 43, 7*7 equals 83, and 5*3 equals 29. However, there is an error in the calculation for x*z, which should equal x + 8z, resulting in 63 instead of 83. The discussion emphasizes the importance of correctly applying the operator in various scenarios. Overall, the calculations demonstrate the operator's consistent application except for the noted discrepancy.
karush
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Define the binary operator * by:
$a*b=a+8b$
Find each of the following

(the only thing I knew to do here was plug in)
[a.] $3*5\quad =3+8(5)=3+40=43$
[b.] $7*7\quad =7+8(7)=7+56=83$
[c.] $5*3\quad =5+8(3)=5+24=29$
[d.] $x*z\quad =x+8z$
 
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$7+56=63\ne83$. The rest is correct.
 
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