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EastWind [94]
4 years ago
6

Square root 2x+1 +3=0 is x=4 Do you agree? Explain why or why not

Mathematics
2 answers:
Nina [5.8K]4 years ago
8 0
False !

If x=4:

\sqrt{2(4)+1+3}= \sqrt{12}\\\\\sqrt{12}\neq0

In fact, the true answer is x=-2

\sqrt{2x+1+3}=0\\\\\sqrt{2x+4}=0\\\\2x+4=0\\2x=-4\\x=-2

wariber [46]4 years ago
8 0
X is not 4
The correct answer would be x=-2
2x+1+3=0
2x+4=0
-4 -4
2x= -4
2 2
X=-2

Hope this helps!
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4 years ago
The population of a town was 25000 in the 2000 census and and 30000 in 2010 census. By what percent did the population increase
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4 0
3 years ago
How do you solve <br>x-3/(x-4) + 4= 3x/3
muminat
<span>x - 3/(x - 4) + 4 = 3 × x/3
</span>
<span><span>x^2−19/</span><span>x−4</span></span>=x
<span>Step 1: Multiply both sides by x-4.

</span><span><span><span>x^2</span>−19</span>=<span><span>x^2</span>−<span>4x

</span></span></span><span><span><span><span>x^2</span>−19</span>−<span>x^2</span></span>=<span><span><span>x^2</span>−<span>4x</span></span>−<span>x^2</span></span></span><span>(Subtract x^2 from both sides)

</span><span><span>−19</span>=<span>−<span>4x</span></span></span>
<span><span>−<span>4x</span></span>=<span>−19</span></span><span>(Flip the equation)

</span><span><span><span>−<span>4x</span></span><span>/−4</span></span>=<span><span>−19</span><span>/−4  </span></span></span>(Divide both sides by -4)<span>Answer.
x=<span>19/4
</span></span><span>Check answers. (Plug them in to make sure they work.)</span>













8 0
4 years ago
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