Question

what is equal to (x+a)(x-b) ?​

Answer 1

Answer:

x² + (a - b)x - ab

Step-by-step explanation:

Given : (x + a)(x - b)

We can write this as :

→ x(x - b) + a(x - b)

→ x² - bx + ax - ab

Taking common.

→ x² + (a - b)x - ab

Similar Identities :

• (x + a)(x + b) = x² + (a + b)x + ab

• (a - b)(a + b) = a² - b²

• (a + b)(a + b) = a² + 2ab + b²

• (a - b)(a - b) = a² - 2ab + b²

• (a + b)² - (a + b)² = 4ab

• An identity is an equation that is true no matters what values are taken.
• If you simplify an identity, you will always get a true statement.