The solution is x = 6
Step-by-step explanation:
Let us revise some rules of the exponents
- If
, then n = m 
∵ 
∵ 9 = 3 × 3
∴ 9 = 3²
- Substitute 9 by 3² in the equation above
∴ 
- Use the second rule above for the left hand side
∵ 
∴ 
∴ 
- By using the first rule above
∴ 2x + 30 = 7x
- Subtract 2x from both sides
∴ 30 = 5x
- Divide both sides by 5
∴ 6 = x
The solution is x = 6
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8x - 88 = 2x - 34
6x = 54
x = 9
You mean (7mn)^2, if so...
(7*3*-2)^2
-42^2=1764
Answer:
B) 27
Step-by-step explanation:
(-3,27)
(-1,19)
(0,15)
(2,7)
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