Question

Determine the solution set of (3x + 1)2 - 100 = 0.
{3, -3}
{3, -11/3}
{-11/3, -3}

Answer 1

substituting the {3,-11/3} the equation is satisfied for the both values individually. Also it can be satisfied by solving the equation 3x2+2x-33=0 and giving the roots as x=3 and x=-11/3

Answer 2

3x+1=+/-10
3x=+/-9
x=+/-3

Answer 3

\[(3x+1)^2=100\]
Take the square root of both sides

Answer 4

Just like jhonyy9 says

Answer 5

thank you