Factories: 1 – (b – c) 2

Question

Factories: 1 &#x2013; (b &#x2013; c) 2

Philoid · Accepted Answer

We have,

1 – (b – c)²

= (1)² – (b –c)²

By using the formula a² – b² = (a + b)(a – b)

We get,

1 – (b – c)² = (1)² – (b –c)²

= {1 + (b – c)}{1 – (b – c)}

= (1 + b – c)(1 – b + c)