Step-by-step explanation:
2^(2x) - 5(2^x) = -4
(2^x)^2 - 5(2^x) = -4
Substitute 2^x = z --> x = ln(z)/ln(2)
z^2 - 5z = -4
z^2 - 5z + 4 = 0
(z - 1)(z - 4) = 0
z = 1 --> x = ln(1)/ln(2) = 0
z = 4 --> x = ln(4)/ln(2) = 2
Answer:
-11n
Step-by-step explanation:
You have to combine like terms
BRAINLIEST PLEASEE
Answer: -7n^2-6n-8
Step-by-step explanation:
Answer:
I've done this before my friend...
Then you can calculate it by doing
(10/20) × 100%
The answer is 50%
So Janet spelled 50% of them correctly
Hope I can help you :)
Brainliest answer? :)
