laurasmith676
laurasmith676
11-07-2017
Mathematics
contestada
quadtric equation x 2 + 3x = 10
Respuesta :
wolf1728
wolf1728
11-07-2017
x^2 + 3x - 10 = 0
a=1 b=3 c= -10
Solving by the quadratic formula:
x = -3 +- sq root (3*3 -4*1*-10) / 2*1
x = -3 +- sq root (9 +40) /2
x1= (-3 +7 )/ 2 = 2
x2 = (-3 -7)/ 2 = -5
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