Question

(y-5)²=y²-5² what is the mathematical error​

Answer 1

Step-by-step explanation:

(y-5)^2 = y^2+ 5^2 - 10y

but in the given Question it's y^2-5^2

so it's an error

Answer 2

Answer:

y2 +25-10y=y2-25

10y=50

y=5