math assignment urgent
1. Provide a counter example that shows the statement is
false. Explain why the counter example makes the statement false.
If two fractions have unlike denominators, then the LCD is the product of their
denominators.
Answer:
1. Justify each step of the proof.
Conjecture: If 2(x^{2} + 5) = 60, then x is 5 or –5. 

1. 2(x^{2} + 5) = 60 
1. 
2. 2x^{2} + 10 = 60 
2. 
3. 2x^{2} = 50 
3. 
4. x^{2} = 25 
4. 
5. x = ±5 
5. 
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