Question

एक्सप्रेशन एंड आईडेंटिटीज पेपर सॉल्व​

Answer 1

Step-by-step explanation:

(a+b)^2 =a2+b2+2ab

a-b^2=a2+b2-2ab

a2-b2=(a+b)(a-b)

(x+a)(x+b)=x2+(a+b)x +ab(where x is constant)

There are more but these are of basic level

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