Question

find the x and y intercept -4x^2+15x+25=0

Answer 1

the y intercept is when x = 0; which makes this (0,25)

Answer 2

the x intercept is when this equation = 0

Answer 3

-(4x^2 -15x -25) = 0

we need 2 numbers (b and c) that subtract to get 15 and multiply to get -100

Answer 4

http://myalgebra.com/algebra_solver.aspx
go here and you'll get it

Answer 5

100 factors into:

1,100
2,50
4,25
5,20 .... 5-20 = -15; and 5(-20) = -100 so those fit the bill

Answer 6

(x-20/4) (x+5/4)

when x = 5 and x = -5/4 look to be the x intercepts