SOLUTION: Solve the equation x2 + 3x - 9 = 0. multiply and simplify (3x+5) (x-3) 3x(2x2 + 5x - 4) = Factor the expression 6x2 - 27x

SOLUTION: Solve the equation x2 + 3x - 9 = 0. multiply and simplify (3x+5) (x-3) 3x(2x2 + 5x - 4) = Factor the expression 6x2 - 27x - 15 completely.

Question 147916: Solve the equation x2 + 3x - 9 = 0.
multiply and simplify (3x+5) (x-3)
3x(2x2 + 5x - 4) =
Factor the expression 6x2 - 27x - 15 completely.
Answer by oscargut(2103) (Show Source): You can put this solution on YOUR website!
x^2 + 3x - 9 = 0 then =

(3x+5)(x-3)=3x^2+5x-9x-15 = 3x^2-4x-15
3x(2x2 + 5x - 4) = 6x^3+15x^2-12x
6x^2 - 27x - 15=0 then =
=
then x=5 or x=-1/2

then 6x^2 - 27x - 15= 6(x-5)(x+1/2)
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