Question

solve (-3-y)² using Identity
pls​

Answer 1

$\huge\color{red}\boxed{Answer}$

by using identity (a-b)²

(-3- y)²

-3² +(-y²) -2(-3)(-y)

9 - y² -6y

or -y² -6y + 9

by factorising

-y² -3y -3y +9

y[y-3] +3[y-3]

(y+3) (y-3)

$\huge\color{</strong><strong>green</strong><strong>}{</strong><strong>expla</strong><strong>nation</strong><strong>}$

• 1st we use identity of a-b² to get an equation
• then we factorise it by using mid term splliting
• so we get two value of y either -3 or +3
• we can slove this by quadratic formula
• after unsing identity

hope it helps you

be brainly