Question

find and correct the error in the following mathematical statement. 1. (y-3)² = y²-9​

Answer 1

Answer:

ANSWER

The statement is incorrect.

It can be expanded by using formula (a+b)

2

. But instead of this the formula used here is a

2

−b

2

which is incorrect.

Therefore the correct statement is

(y−3)

2

=y

2

−2×y×3+9=y

2

−6y+9