the base is 2 on both sides. i think the answer is either 0 or no solutions, right?
2007-11-30 02:51:37 · 4 answers · asked by m-o-o-n 3 in Science & Mathematics ➔ Mathematics
No solution
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Reason:
7x+2 = 7x+5
2 = 5, <- This is impossible.
2007-11-30 02:55:26 · answer #1 · answered by sahsjing 7 · 5⤊ 0⤋
You don't need to try to solve this mathematically, just take a look at the equation. Both sides are not the same, even though they have basic elements.
The left side:
log2(7x + 2) can ONLY be = log2(7x + 2)
The right side:
log2(7x + 5) has "5" instead of "2" and can ONLY be = log2(7x + 5)
So, there is absolutely NO WAY that:
log2(7x + 2) = log2(7x + (2 "+3"))
2007-11-30 11:00:27 · answer #2 · answered by Anonymous · 2⤊ 1⤋
If this is log2 of each side then equation is false because log2 (7x + 2) â log2 (7x + 5)
2007-11-30 11:02:11 · answer #3 · answered by Como 7 · 3⤊ 1⤋
log2(7x+2)=log2(7x+5)
7x+2 = 7x+5
2=5 false
Therefore no solutions.
The answer is not 0.
log2(0+2) <> log2(0+5)
2007-11-30 10:56:27 · answer #4 · answered by Sciman 6 · 3⤊ 1⤋