Determine the roots of
x² + x -
(a + 1)(a + 2) = 0 by using the
quadratic formula.
(a+2) and (a+1)
a
-(a+2) and (a-1)
-(a+2) and -(a+1)
(a+1) and -(a+2)
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(a+1) (a+2) =0
a^2 + 2a + a + 2 =0
a^2 + 3a + 2 =0
a = 1 ;. b = 3 ; c = 2
Discriminant = b^2 - 4ac
Discriminant = 3^2 - 4 × 1 × 2
Discriminant = 9-8
Discriminant =1
Alpha = -b + √D / 2a
= -3 - √1 / 2
= -3 +1 / 2
= -2 / 2
-1
Beta = -b -√ D / 2a
= -3 -√1 / 2
= -3 -1 / 2
= -4 / 2
= -2
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