sarahossain1771
sarahossain1771 sarahossain1771
  • 21-09-2019
  • Mathematics
contestada

factorise the following

25r²-100=0

Respuesta :

kosala1478
kosala1478 kosala1478
  • 21-09-2019

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 Link
BasketballEinstein
BasketballEinstein BasketballEinstein
  • 23-09-2019

Answer:

[tex]25[r - 2][r + 2][/tex]

Step-by-step explanation:

[tex]25{r}^{2} -100 \\ 25({r}^{2} - 4) \\ 25(r - 2)(r + 2)[/tex]

I am joyous to assist you anytime.

Answer Link

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