Question 170212
this is a quadratic equation with (x^2 -3) as the variable


imagine if (x^2 -3) is m, then m^2 + m - 2 = 0, which factors to (m+2)(m-1)=0


factoring __ [(x^2 -3)+2][(x^2 -3)-1]=0


x^2 -3 +2 = 0 __ x^2 -1 = 0 __ factoring __ (x+1)(x-1)=0 __ x=1, x=-1


x^2 -3 -1 = 0 __ x^2 -4 = 0 __ factoring __ (x+2)(x-2)=0 __ x=2, x=-2