SOLUTION: What is {{{a^2+2}}} if a is the smallest root of {{{x^2-3x-18}}}?
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Algebra: Radicals -- complicated equations involving roots
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Question 156621
:
What is
if a is the smallest root of
?
Answer by
Alan3354(69443)
(
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What is
if a is the smallest root of
?
Factor the trinomial:
(x + 3)*(x - 6)
So x = -3, 6
-3 is the smallest
Sub -3 for a
(-3)^2 + 2
= 11
