Question 450009
Solve the equations by a method of your choice. 
4x^2+15x+9=0
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Use Inverse-FOIL:
4x^2+12x+3x+9 = 0
4x(x+3)+3(x+3) = 0
(x+3)(4x+3) = 0
x = -3 or x = -3/4
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x^2-8x+16=0
(x-4)^2 = 0
x = 4 with multiplicity 2
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x^2-2x-3=0
(x-3)(x+1) = 0
x = 3 or x = -1
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Cheers,
Stan H.
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