Jika x1 dan x2 merupakan akar akar persamaan 2x^2 - 4^-3makan =0 nilai x1^2 +x2^2 =

2x²-4x-3=0
x1+x2= -b/a = -(-4)/2 = 2
x1 . x2 = c/a = -3/2
x1²+x2² = (x1+x2)²-2x1x2 = (2)² - 2(-3/2) = 4 + 3 = 7