Question

10r-25-r²=0
Please help me to simplify this​

Answer 1

Answer:

,

Step-by-step explanation:

hence r will be real and equal. means discriminant D=0

Answer 2

Switch sides,

r 2 - 10r + 25 = 0
r2 -5r -5r + 25 = 0
r ( r -5 ) -5 ( r -5 )= 0
( r-5 ) ( r-5 ) = 0
r = 5

Or

r2- 2(5)(r) - (5) (5)
Expression of (a -b ) 2
= ( r -5 )2
R = 5