# Ex 6.1, 6 - Chapter 6 Class 8 Squares and Square Roots

Last updated at Sept. 11, 2018 by Teachoo

Last updated at Sept. 11, 2018 by Teachoo

Transcript

Ex 6.1, 6 Using the given pattern, find the missing numbers. 1^2 + 2^2+2^2 = 3^2 1^2 + 3^2+6^2 = 7^2 3^2 + 4^2+〖12〗^2 = 〖13〗^2 4^2 + 5^2+〖__〗^2 = 〖21〗^2 5^2 + 〖__〗^2+〖30〗^2 = 〖31〗^2 6^2 + 7^2+__ = 〖__〗^2 𝟒^𝟐 + 𝟓^𝟐+〖__〗^𝟐 = 〖𝟐𝟏〗^𝟐 Now, 3rd number = 4 × 5 = 20 ∴ 4^2 + 5^2+〖𝟐𝟎〗^𝟐 = 〖21〗^2 𝟓^𝟐 + 〖__〗^𝟐+〖𝟑𝟎〗^𝟐 = 〖𝟑𝟏〗^𝟐 Now, 3rd number = 1st number × 2nd number 3rd number = 5 × 2nd number 30 = 5 × 2nd number 30/5 = 2nd number 6 = 2nd number 2nd number = 6 ∴ 𝟓^𝟐 + 𝟔^𝟐+〖𝟑𝟎〗^𝟐 = 〖𝟑𝟏〗^𝟐 ∴ 5^2 + 𝟔^𝟐+〖30〗^2 = 〖31〗^2 𝟔^𝟐 + 𝟕^𝟐+__ = 〖__〗^𝟐 Now, 3rd number = 1st number × 2nd number 3rd number = 6 × 7 = 42 Also, 4th number = 3rd number + 1 = 42 + 1 = 43 ∴ 6^2 + 7^2+〖𝟒𝟐〗^𝟐 = 〖𝟒𝟑〗^𝟐

Ex 6.1

Ex 6.1, 1 (i)

Ex 6.1, 1 (ii)

Ex 6.1, 1 (iii)

Ex 6.1, 1 (iv)

Ex 6.1, 1 (v)

Ex 6.1, 1 (vi)

Ex 6.1, 1 (vii)

Ex 6.1, 1 (viii)

Ex 6.1, 1 (ix)

Ex 6.1, 1 (x)

Ex 6.1, 2 (i) Important

Ex 6.1, 2 (ii)

Ex 6.1, 2 (iii)

Ex 6.1, 2 (iv)

Ex 6.1, 2 (v)

Ex 6.1, 2 (vi)

Ex 6.1, 2 (vii)

Ex 6.1, 2 (viii)

Ex 6.1, 3 (i)

Ex 6.1, 3 (ii)

Ex 6.1, 3 (iii)

Ex 6.1, 3 (iv)

Ex 6.1, 4

Ex 6.1, 5

Ex 6.1, 6 You are here

Ex 6.1, 7 (i)

Ex 6.1, 7 (ii)

Ex 6.1, 7 (iii)

Ex 6.1, 8 (i) Important

Ex 6.1, 8 (ii)

Ex 6.1, 9 (i) Important

Ex 6.1, 9 (ii)

Ex 6.1, 9 (iv)

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Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.