Explanation:
5(1+x)
= 5 + 5x
= 5x + 5
.......
Answer:
(−∞,∞)
5(1+x)=5x+5
5*1=5
(5+x)=5x+5
5*x=5x
5+5x=5x+5
5-5=0
5x-5x=0
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