Look if we follow the trinomial rule then use your calculator (mode 5 then 3) put a=1 b= 0 (because we don't have x) then c = 25Your calculator will give two Xs one 5 and the other -5So we put them by reversing sign as usual and get (x-5)(x+5)A better method is to know that if you have a minus between two squares ( the x^2 and the 25 which is 5^2)Then you don't need a calculator. Just put two brackets with different signs (x-5)(x+5)So if you understand that the second problem will be (x-3)(x+3)... Hope this helps 😁

No you need a better calculator

Use mode 5 3

Look if we follow the trinomial rule then use your calculator (mode 5 then 3) put a=1 b= 0 (because we don't have x) then c = 25 Your calculator will give two Xs one 5 and the other -5 So we put them by reversing sign as usual and get (x-5)(x+5) A better method is to know that if you have a minus between two squares ( the x^2 and the 25 which is 5^2) Then you don't need a calculator. Just put two brackets with different signs (x-5)(x+5) So if you understand that the second problem will be (x-3)(x+3)... Hope this helps 😁