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Kaila_111697
 2 years ago
x^2 + 4=104
what is x? There will be a positive and negative number.
Kaila_111697
 2 years ago
x^2 + 4=104 what is x? There will be a positive and negative number.

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John_ES
 2 years ago
Best ResponseYou've already chosen the best response.0\[x^2=1044=100\Rightarrow x^2=100\Rightarrow x=\pm\sqrt{100}=\pm10\]

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1x^2 + 4=104 Subtract 4 from both sides. x^2 = 100 What number times itself is equal to 100? @Kaila_111697

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1Post what you think it is.

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1If I had asked what number times itself equals 25, you would have said 5 because 5 times 5 equals 25. Then, I would have said but there is also a negative number that you can multiply times itself and get 25. You would have said 5 because 5 times 5 = 25.

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1@Kaila_111697 That is correct. What about the negative number.

Kaila_111697
 2 years ago
Best ResponseYou've already chosen the best response.0But it is not 100 its 104

surjithayer
 2 years ago
Best ResponseYou've already chosen the best response.0x^2+4=104 x^2=1044=100 x=sqrt100=\[\pm10\]

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1@Kaila_111697 Look at the equation: x^2 + 4=104 We subtracted the 4 from both sides to get x^2 = 100.

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1But 10 satisfies the equation: x^2 + 4=104 because 10*10 + 4 = 100 +4.

Directrix
 2 years ago
Best ResponseYou've already chosen the best response.1>>oh so 10 and 10 Yes.
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