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The square root of the sum of 4 and certain number is 4.Find the number
A.12
B.8
C.1
D.0​


Sagot :

Answer:

The answer is letter B. 8

Step-by-step explanation:

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Answer:

A. 12

Step-by-step explanation:

The square root of the sum of 4 and a certain number is 4.

[tex] \\ \tt{} \sqrt{ 4 + x} = 4 \\ \\ [/tex]

What is the number?

[tex]\\ \tt{} \sqrt{4 + x} = 4[/tex]

[tex]\\ \tiny{}\tt{}square \: \: both \: \: side [/tex]

[tex]\\ \tt{}4 + x = 16[/tex]

[tex]\\ \tt{}x = 16 - 4[/tex]

[tex]\\ \boxed{ \large \boxed{\tt{}x = 12}}[/tex]

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