Question

Factor Completely.
40m^2-39m-40

Answer 1

complete the square?

Answer 2

No idea what youre talking about

Answer 3

It just says factor completely?

Answer 4

Its number 10

Answer 5

Expand the following:
(5 m-8) (8 m+5)

Answer 6

@robtobey How did you get those two numbers? Im trying to use the diamond method for 3terms

Answer 7

Factor the following:
40 m^2-39 m-40
Factor 40 m^2-39 m-40 by finding factors of 40 (-40) whose sum is -39.
Factor the quadratic 40 m^2-39 m-40. The coefficient of m^2 is 40 and the constant term is -40. The product of 40 and -40 is -1600. The factors of -1600 which sum to -39 are 25 and -64. So 40 m^2-39 m-40 = 40 m^2-64 m+25 m-40 = 5 m (8 m+5)-8 (8 m+5):
5 m (8 m+5)-8 (8 m+5)
Factor common terms from 5 m (8 m+5)-8 (8 m+5).
Factor 8 m+5 from 5 m (8 m+5)-8 (8 m+5):
Answer:
(8 m+5) (5 m-8)

Answer 8

Thank you @nincompoop !! So much help.

Answer 9

Did you guess and check 25 & -64? @nincompoop

Answer 10

???