X^2 – 4x + 3 = 0. Maka nilai dari x1^2 + x2^2
x² – 4x + 3 = 0
x1 + x2 = 4
x1.x2 = 3
x1² + x2² = (x1 + x2)² – 2×1.x2 = (4)² – 2(3) = 16 – 6 = 10
X² – 4x + 3 = 0
(x-1) (x-3) = 0
x1 = 1 ==> (x1)² = 1² = 1
x2 = 3 ==> (x2)² = 3² = 9
x1² + x2² = 1+9 = 10
X^2 – 4x + 3 = 0. Maka nilai dari x1^2 + x2^2
x² – 4x + 3 = 0
x1 + x2 = 4
x1.x2 = 3
x1² + x2² = (x1 + x2)² – 2×1.x2 = (4)² – 2(3) = 16 – 6 = 10
X² – 4x + 3 = 0
(x-1) (x-3) = 0
x1 = 1 ==> (x1)² = 1² = 1
x2 = 3 ==> (x2)² = 3² = 9
x1² + x2² = 1+9 = 10