We can also use the expansion of (a + b)2 to find the expansion - Square of the Sum/Difference of Two Numbers

Remove Ads

Transcript

Question 1 - Page 147 We can also use the expansion of (a + b)2 to find the expansion of (a โ€“ b)2. Think how. Hint: (a โ€“ b)2 = (a + (โ€“b))2.We follow as the hint says Now, (๐‘Žโˆ’๐‘)^2=(๐‘Ž+(โˆ’๐‘))^2 =๐‘Ž^2+2 ร— ๐‘Ž ร— (โˆ’๐‘)+(โˆ’๐‘)^2 As (-b)2 = b2 =๐’‚^๐Ÿโˆ’๐Ÿ๐’‚๐’ƒ+๐’ƒ^๐Ÿ

CA Maninder Singh's photo - Co-founder, Teachoo

Made by

CA Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. At Teachoo, he simplifies Accounts, Tax and GST with step-by-step examples so students can apply concepts confidently in exams and real life.

For an uninterrupted learning experience, students can use Teachoo Black to remove ads and focus better.