2х(3х-1)>4х2+5х+9 Срочно !!!!!!!!!!помогите

Question

2х(3х-1)>4х2+5х+9 Срочно !!!!!!!!!!помогите

Answer 1

6x²-2x-4x²-5x-9>0
2x²-7x-9>0
D=49+72=121
x1=(7-11)/4=-1
x2=(7+11)/4=4,5
x∈(-∞;-1) U (4,5;∞)

Comments

6x-2x>8+5x+9

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6x-2x-5x>8+9

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-x>17

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x>-17