Question

Solve for x.

3x2 – 75 = 0

A.
{25, –25}

B.
{5, –5}

C.
{5}

D.
{25}

Answer 1

3x^2=75
x^2=75/3
x^2=25
x=sqreroot 25
which is +5,-5
so ans is B

Answer 2

No answer of your question is correct..
and @madrockz have given correct explaination

Answer 3

THANKS @bhaskar.pathk

Answer 4

@TakeA.I.M. : keeping -5 in the given equation..
3x2 – 75 = 0

3(-5)^2 -75
3 X 25 -75= 0

as square of 5 and -5 are equal ie 25
hope you get it..