Please answer the following questions, thank you?

Question

Answer 1

最佳解答

1.

y=-3x^2+5x+4

y=2x-2

x=-1 y=-4

x=2 y=2

2

7x+2(2x+3)<-5

7x+4x+6<-5

11x<-11

x<-11

5-7x>-5x-13

18>2x

9>x

so the ans is x<-11