(a-1)×(a+1)=_______(a) a^2-1(b) a^2+1(c) a^2(d) a^2+2The question was asked in exam.Enquiry is from Patterns in Squares of Numbers topic in section Squares and Square Roots of Mathematics – Class 8

(a-1)×(a+1)=_______(a) a^2-1(b) a^2+1(c) a^2(d) a^2+2The question was

1.	(a-1)×(a+1)=_______(a) a^2-1(b) a^2+1(c) a^2(d) a^2+2The question was asked in exam.Enquiry is from Patterns in Squares of Numbers topic in section Squares and Square Roots of Mathematics – Class 8
Answer» CORRECT answer is (a) a^2-1 The best explanation: We have (a-1)×(a+1). Opening the brackets, we get, (a-1)×(a+1)=(a^2+a-a-1)=(a^2-1). HENCE, we CONCLUDE this (a-1)×(a+1) to be the correct answer.

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(a-1)×(a+1)=_______(a) a^2-1(b) a^2+1(c) a^2(d) a^2+2The question was asked in exam.Enquiry is from Patterns in Squares of Numbers topic in section Squares and Square Roots of Mathematics – Class 8

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