+0

+1
175
3

Define $E(a,b,c) = a \cdot b^2 + c$. What value of $a$  is the solution to the equation

$E(a,4,5) = E(a,6,7)$?

Aug 14, 2020

#1
+1

The solution is a = -3.

Aug 14, 2020
#3
+31523
+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

Aug 14, 2020
edited by Alan  Aug 14, 2020