Respuesta :

mamtapushkar38

Answer:

x= -2 and 9

Step-by-step explanation:

[tex]x ^{2} + 7x - 18[/tex]

factorize it

- 18 = 2×3×3

TO MAKE IT 7

3×3=9

9-2 =7

[tex]x ^{2} + 9x - 2x - 18x = 0[/tex]

x(x+9)-2(x+9)=0

x-2=0 ,x+9=0

x =2 x=-9

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