The value of the product -2a (ab + b 2 ), when a=2, b=4 is - Sri Chaitanya Infinity Learn Best Online Courses for NCERT Solutions, CBSE, ICSE, JEE, NEET, Olympiad and Class 6 to 12

Given Expression is -

2 a (a b + b 2)

.
We know that distributive law states,

a × b + c = a × b + a × c

On simplification, we get,

= − 2 a (a b + b 2)

= − 2 a × a b − 2 a × b 2

= − 2 a 2 b − 2 a b 2

For a = 2 , b = 4 , the value of product is,

= − 2 × 22 × 4 − 2 × 2 × 42 = − 32 − 64 = − 96

Therefore, the correct option is (1).

The value of the product -2a (ab + $b 2$ ), when a=2, b=4 is