Question 4 (1 point) Which value of 20 is a solution to this equation? 2x^2=72 x=-6;x=6 x=-8;x=8 x=-36;x=36 x=-18;x=18

To solve the equation $2x^{2}=72$, we need to isolate $x$.<br /><br />Step 1: Divide both sides of the equation by 2 to get $x^{2}=36$.<br /><br />Step 2: Take the square root of both sides to get $x=\pm\sqrt{36}$.<br /><br />Step 3: Simplify the square root to get $x=\pm6$.<br /><br />Therefore, the values of $x$ that are solutions to the equation $2x^{2}=72$ are $x=-6$ and $x=6$.<br /><br />Answer: $x=-6;x=6$