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Verified answer
X² - 4x + 3 = 0a = 1 , b = - 4 , c = 3
x1 + x2 = - b/a = 4/1 = 4
X1 • x2 = c/a = 3/1 = 3
x1² + x2²
= ( x1 + x2)² - 2x1x2
= ( 4)² - 2(3)
= 16 - 6
= 10 ( E )
Verified answer
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