Question

evalute using suitable identities 2.(b-7)²​

Answer 1

Answer given

Hope it may help you❤✌

Answer 2

Step-by-step explanation:

Since we have given that

$\huge\tt\color{red}{(b-7)²}$

As we know the identity:

$\huge\tt\color{magenta}{(a-b)²=a²+b²-2ab}$

So, it becomes

$</p><p>\huge\tt\color{yellow}{(b-7)²= b²+7²-2ab)}</p><p>$

$\huge\tt\color{purple}{(b-7)²=b²+49-14b}$