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5x2 - 4x – 9 = 0
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User Jarin Udom
by
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1 Answer

1 vote

Answer:

Explanation:

5×-9=-45

-9+5=-4

5x²-4x-9=0

5x²-9x+5x-9=0

x(5x-9)+1(5x-9)=0

(5x-9)(x+1)=0

x=-1,9/5

User Belkis
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