laurasmith676 laurasmith676

11-07-2017
Mathematics

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quadtric equation x 2 + 3x = 10

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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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