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solve and check the roots of the following quadratic equation by factoring 9x²+6x=0​

Sagot :

[tex]\large\underline{ \mathcal {SOLUTION}}:[/tex]

9x²+6x=0

3x(3x+2) = 0

  • By zero product property

3x = 0

x = 0/3

x = 3

[tex] \\ [/tex]

3x+2 = 0

3x = 0 - 2

3x = -2

x = -2/3

[tex] \\ [/tex]

Checking:

  • 9x²+6x = 0
  • 9(0)²+6(0) = 0
  • 9(0) + 0 = 0
  • 0 + 0 = 0

[tex] \\ [/tex]

  • 9x²+6x = 0
  • 9(-2/3)² + 6(-2/3) = 0
  • 9(4/9) + 2(-2) = 0
  • 4 - 4 = 0

[tex] \\ [/tex]

[tex]\large\underline{ \mathcal {ANSWER}}:[/tex]

  • The roots are 0 and -2/3