Define $E(a,b,c) = a \cdot b^2 + c$. What value of $a$ is the solution to the equation
$E(a,4,5) = E(a,6,7)$?
The solution is a = -3.
Define E(a,b,c) = a . b^2 + c. What value of a is the solution to the equation
E(a,4,5) = E(a,6,7)?
a*42 + 5 = a*62 + 7
16a + 5 = 36a + 7
5 - 7 = 36a - 16a
20a = -2
a = -1/10 or a =- 0.1
