Check sibling questions

Ex 9.5, 7 - Using a^2 - b^2 = (a + b) (a - b), find (i) 51^2 - 49^2

Β 

Β 


Transcript

Ex 9.5, 7 Using π‘Ž^2βˆ’π‘^2=(π‘Ž+𝑏)(π‘Žβˆ’π‘) , find (i) γ€–51γ€—^2βˆ’γ€–49γ€—^2 γ€–51γ€—^2βˆ’γ€–49γ€—^2 π‘Ž^2βˆ’π‘^2=(π‘Ž+𝑏)(π‘Žβˆ’π‘) Putting π‘Ž = 51 & 𝑏 = 49 = (51+49)Γ—(51βˆ’49) = 100Γ—2 = 𝟐𝟎𝟎

Davneet Singh's photo - Teacher, Engineer, Marketer

Made by

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.