simplify e6q5 *

[tamiatha]

simplify (5x-4)^2

my answer: 25x^2-16

correct?

 

[Deleted member 4993]

Re: simplify e6q5

simplify (5x-4)^2

my answer: 25x^2-16

correct?..... No

Use

(a + b)[sup:3rpsd09h]2[/sup:3rpsd09h] = a[sup:3rpsd09h]2[/sup:3rpsd09h] + 2ab + b[sup:3rpsd09h]2[/sup:3rpsd09h]

 

[tamiatha]

Re: simplify e6q5

why use 2ab

i do not get it

5x * 5X=25X
4*4=16

PLEAse help me
where does the 2ab come in at

 

[stapel]

why use 2ab

Didn't your class cover how to multiply polynomials?

 

[tamiatha]

Re: simplify e6q5

i don't have a class
only a text book and you wonderful,helpful people
online high school diploma program
i will study what you suggested
thanks