Question

Q. If a + b = √3, then find value of(a+ 2b). (2a + b).​

Answer 1

(a² - √3a + 6)

Step-by-step explanation:

a + b = √3

b = √3 - a

Now,

(a+ 2b) (2a + b)

(a + 2(√3 - a)) (2a + √3 - a)

(a + 2√3 - 2a) (a + √3)

(-a + 2√3) (a + √3)

( -a² - √3a + 2√3a + 6)

(-a² + √3a + 6)

(a² - √3a + 6)