Question

Find the product using suitable identity:

(5ab + 7)( 5ab + 2)​

Answer 1

Answer:

(5ab+7) (5ab+2)

25ab+10ab+35ab+14    

70ab+14

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Step-by-step explanation:

Answer 2

Step-by-step explanation:

by identity (x+a)(x+b) = x²+(a+b)x+ab

here x= 5ab

a=7

b=2

now using identity

(5ab+7)(5ab+2)

25a²b² + (7+2)5ab + 14

25a²b² + 45ab + 14

rechecking our answer

(5ab+7)(5ab+2)

25a²b² + 35ab + 10ab + 14

25a²b² + 45ab + 14