Which choice correctly shows the solution(s) of the equation x2=121?

Mathematics

2 answers:

r-ruslan [8.4K]3 years ago

8 0

Answer:

x = ±11

Step-by-step explanation:

x^2 =121

Take the square root of each side

sqrt(x^2) = ±sqrt(121)

x = ±11

mote1985 [20]3 years ago

7 0

Answer:

x=±11

Step-by-step explanation:

To solve, we need to isolate the variable x,

To do this, take the square root of both sides

$x^{2} =121\\\sqrt{x^{2} } =\sqrt{121}$

x=±11

It is positive or negative 11 because 11^2 (11*11)=121, but -11^2 (-11*-11) also equals 121 because 2 negatives multiplied become a positive.

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