Question

(iii) (a? + b) (a + b2)
plz yaar koi right answer de do

std-8
sub-maths
lesson-9
Exercise-9.4
que-find the product
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Answer 1

Answer:

Check commutative is

a∗b=b∗a

a∗b=a−b

b∗a=b−a

Since, a∗b=b∗a

∗ is not commutative.

Check associative

∗ is associative if

(a∗b)∗c=a∗(b∗c)(a∗b)∗c=(a−b)∗c=(a−b)−c=a−b−ca∗(b∗c)=a∗(b−c)=a−(b−c)=a−b+c

Since (a∗b)∗c=a∗(b∗c)

∗ is not an associative binary operation.

Step-by-step explanation:

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