SOLUTION: Solve:
a) x2 - 6x - 16 = 0
b) 6x2 + 42 = 0
f(t) = 2t2 - 4t - 1 find
a) f(2)
b) f(-1)
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Question 204727: Solve:
a) x2 - 6x - 16 = 0
b) 6x2 + 42 = 0
f(t) = 2t2 - 4t - 1 find
a) f(2)
b) f(-1)
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
a) Solve:
Factor the trinomial.
so that...
or therefore...
or
b) Subtract 42 from both sides of the equation.
Divide both sides by 6.
Take the square root of both sides.
or
c)
Find:
Simply substitute t = 2 into the equation and simplify.
Evaluate.
Substitute t = -1
You should be able to handle this one using the previous one as a guide!
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