If \(5^{(x + 2y)} = 5\) and \(4^{(x + 3y)} = 16\), find \(3^{(x + y)}\).
a
7
b
1
c
3
d
27
Explanation
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Chuks612
9 years ago
Here is an explanation:
5^(x+2y)=5¹
Taking away the bases.
X+2y=1.....equ¹
4^(x+3y)=16
4^(X+3y)=4²
Taking away the bases.
X+3y=2......equ²
Subtracting ² from ¹
Y=1
Substituting for y=1 in equ²
X+3(1)=2
X+3=2
X=2-3
X=-1
Having gotten x and y,sub for x and y in 3^(x+y)
3^(-1+1)
3^0= 1
Reason: any number raise to the power of zero is equal to one.


