Question

Solve : 3x^2-12=0 and explain also .​

Answer 1

Step-by-step explanation:

3x²-12=0

=>3x²=12

=>x²=12/3

=>x²=4

=>x=√4= -2 or 2

the reason that there are two answers is that the square of a real number will always be +ve.

for example:

(-1)²=1 and also (1)² = 1

so we don't know that the answer in the given question is positive or negative hence we write 2 answers for the given question.

hope this helps ou and please mark it as the brainliest.

cheers:)

Answer 2

Answer:

3x^2-12=0

3(x^2-4) =0

x^2-4=0

x^2=4

x=

$\sqrt{4 } \\ x = 2$