Factorise the following
25r²-100=0

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

Step-by-step explanation:

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