Question

2^x+2^x+2^x+2^x=2^7. What is the value of x

Answer 1

4(2^x) = 2^7 = 128

2^x = 32

x = 5

Answer 2

All good now, @ksaimouli ?

Answer 3

Can't we use rules of expo

Answer 4

ok,

(4)(2^x) = 2^7

(2^2)(2^x) = 2^7

2^x = (2^7)/(2^2)

2^x = 2^(7-2)

2^x = 2^5

x = 5

Answer 5

I got it but how did u multi 4

Answer 6

4(2^x)

Answer 7

Because there were 4 identical terms on the left.

Answer 8

Thx got it

Answer 9

2^x+2^x+2^x+2^x = (4)(2^x)

ok, just got your message.

uw!