Question

Factorise the following 25r²-100=0

Answer 1

Answer:

Plz don't delete...cuz im tryna help '-'

Step-by-step explanation:

25r²-100=0

25r^2 = 100

cuz the (-) will turn (+) when taken to the other side of the (=) sign

25r^2 = 100

divide both sides by 25

divide both sides by 25 then we get

r^2 = 4

r^2 = 2^2

now take the sqare root of both sides

r = 2

Answer 2

Answer:

$25[r - 2][r + 2]$

Step-by-step explanation:

$25{r}^{2} -100 \\ 25({r}^{2} - 4) \\ 25(r - 2)(r + 2)$

I am joyous to assist you anytime.