Question

calcule A=3 B=-7 C=2

Answer 1

delta = b^2 - 4ac
delta = (-7)^2 - 4.3.2
delta = 49 - 24
delta = 25

$x1= - ( - 7) + \sqrt{25} \div 2 \times 3$
$x1 = 7 + 5 \div 6 = 12 \div 6 = 2$
X1 = 2

$x2 = - ( - 7) - \sqrt{25} \div 2 \times 3$
$x2 = 7 - 5 \div 6 = 2 \div 6 = 0.33$
X2 = 0,33