Question

11. (y - 3)^2 = y^2 - 9​

Answer 1

Answer:

y=3

Step-by-step explanation:

(y−3)2=y2−9

Step 1: Simplify both sides of the equation.

y2−6y+9=y2−9

Step 2: Subtract y^2 from both sides.

y2−6y+9−y2=y2−9−y2

−6y+9=−9

Step 3: Subtract 9 from both sides.

−6y+9−9=−9−9

−6y=−18

Step 4: Divide both sides by -6.

−6y/−6

=−18/−6

Answer: y=3

Answer 2

Answer:

y=3

Step-by-step explanation:

(y-3)² = y² - 9

y² + 9 - 6y = y² -9. (y² term gets cancelled)

6y = 18

y= 18/6

y=3