Question

-x^2 + 4X + 5 >0

Answer 1

might want to multiply both sides by -1, and see if you can factor it

Answer 2

x^2 -4X + 5 < 0
how do i find x?
can you show me the way?
the primary language of my country is not english so i don't understand words like factor

Answer 3

-x^2 + 4X + 5 >0
i.e. x^2 -4X - 5 >0
i.e. x^2 -5X+x - 5 >0
i.e. x(x -5)+1(x - 5) >0
i.e. (x +1)(x - 5) >0
thus either (x +1)>0 or (x - 5) >0
i.e x>-1 or x>5

Answer 4

-x^2 + 4X + 5 >0

x^2 - 4X - 5 < 0

we want factors of -5 that add up to -4

Answer 5

dp, flip you inequality sign when negating

Answer 6

ideally, just find the roots or zeros of the function, and test the vertex to see if its positive or negtaive

Answer 7

so wait it cant be
x>-1 or x>5
it can be either
x<-1 or x>5
or it can also be
x>-1 and x<5 (or if you want: -1<x<5)
which one is it?

Answer 8

The ans can be written as -1<x>5

Answer 9

so it is x<-1 or x>5?

Answer 10

No, it is -1<x or x>5

Answer 11

Combining both we can write it together as-1<x>5

Answer 12

dude
-1<x or x>5
is just like
x>-1
am i wrong?

Answer 13

x is grater than -1, conversely we can say that -1 is less than x i.e. -1<x symbolicaly

Answer 14

x>-1 is also true and this we have obtained while solving the inequality.

Answer 15

i think it is -1<x<5