Question

Solve 4^(2x) = 7^(x−1).

2.35389
−2.35389
−1
1

Answer 1

@peachpi

Answer 2

do you have to do this by hand?

Answer 3

nope

Answer 4

i can use a calculator and stuff

Answer 5

you'd have to take a log of both sides. then rewrite

ln (4^(2x)) = ln (7^(x-1))

2x ln 4 = (x - 1) ln 7

Answer 6

oh if you can use a calculator, use wolfram alpha.
or graph both sides and find the intersection point

Answer 7

ok thanks!!! I have one more and I am really confudes... I will medal you and everything :-) thanks so much for the help so far