Chapter 9 – Algebraic Expressions and Identities
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117. If x – 1/x = 7 then find the value of x^2 + 1/x^2.
27
Jul
117. If x – 1/x = 7 then find the value of x^2 + 1/x^2. 117. If x - 1/x = 7 then find the value of x^2 + 1/x^2. July 27, 2021 Category: Chapter 14 - Factorisation , Chapter 9 - Algebraic Expressions and Identities , Maths , NCERT Class 8 ,
116. Subtract b (b^2 + b – 7) + 5 from 3b^2 – 8 and find the value of expression obtained for b = – 3.
27
Jul
116. Subtract b (b^2 + b – 7) + 5 from 3b^2 – 8 and find the value of expression obtained for b = – 3. 116. Subtract b (b^2 + b – 7) + 5 from 3b^2 – 8 and find the value of expression obtained for b = – 3. July 27, 2021 [...]
115. What should be added to 4c (– a + b + c) to obtain 3a (a + b + c) – 2b (a – b + c)?
27
Jul
115. What should be added to 4c (– a + b + c) to obtain 3a (a + b + c) – 2b (a – b + c)? 115. What should be added to 4c (– a + b + c) to obtain 3a (a + b + c) – 2b (a – b + [...]
114. Find the value of a, if (iv) pq^2a = (4pq + 3q)^2 – (4pq – 3q)^2
27
Jul
114. Find the value of a, if (iv) pq^2a = (4pq + 3q)^2 – (4pq – 3q)^2 114. Find the value of a if (iv) pq^2a = (4pq + 3q)^2 – (4pq – 3q)^2 July 27, 2021 Category: Chapter 14 - Factorisation , Chapter 9 - Algebraic Expressions and Identities , Maths , NCERT Class [...]
114. Find the value of a, if (iii) pqa = (3p + q)^2 – (3p – q)^2
27
Jul
114. Find the value of a, if (iii) pqa = (3p + q)^2 – (3p – q)^2 114. Find the value of a if (iii) pqa = (3p + q)^2 – (3p – q)^2 July 27, 2021 Category: Chapter 14 - Factorisation , Chapter 9 - Algebraic Expressions and Identities , Maths , NCERT Class [...]
114. Find the value of a, if (ii) 9a = 76^2 – 67^2
27
Jul
114. Find the value of a, if (ii) 9a = 76^2 – 67^2 114. Find the value of a if (ii) 9a = 76^2 – 67^2 July 27, 2021 Category: Chapter 14 - Factorisation , Chapter 9 - Algebraic Expressions and Identities , Maths , NCERT Class 8 ,
114. Find the value of a, if (i) 8a = 35^2 – 27^2
27
Jul
114. Find the value of a, if (i) 8a = 35^2 – 27^2 114. Find the value of a if (i) 8a = 35^2 – 27^2 July 27, 2021 Category: Chapter 14 - Factorisation , Chapter 9 - Algebraic Expressions and Identities , Maths , NCERT Class 8 ,
113. Verify the following: (x) (3p/7 + 7/6p)^2 – (3/7p + 7/6p)^2 = 2
27
Jul
113. Verify the following: (x) (3p/7 + 7/6p)^2 – (3/7p + 7/6p)^2 = 2 113. Verify the following: (x) (3p/7 + 7/6p)^2 - (3/7p + 7/6p)^2 = 2 July 27, 2021 Category: Chapter 14 - Factorisation , Chapter 9 - Algebraic Expressions and Identities , Maths , NCERT Class 8 ,
113. Verify the following: (viii) (5x + 8)^2 – 160x = (5x – 8)^2
27
Jul
113. Verify the following: (viii) (5x + 8)^2 – 160x = (5x – 8)^2 113. Verify the following: (viii) (5x + 8)^2 – 160x = (5x – 8)^2 July 27, 2021 Category: Chapter 14 - Factorisation , Chapter 9 - Algebraic Expressions and Identities , Maths , NCERT Class 8 ,
113. Verify the following: (vii) (a^2 – b^2) (a^2 + b^2) + (b^2 – c^2) (b^2 + c^2) + (c^2 – a^2) + (c^2 + a^2) = 0
27
Jul
113. Verify the following: (vii) (a^2 – b^2) (a^2 + b^2) + (b^2 – c^2) (b^2 + c^2) + (c^2 – a^2) + (c^2 + a^2) = 0 113. Verify the following: (vii) (a^2 – b^2) (a^2 + b^2) + (b^2 – c^2) (b^2 + c^2) + (c^2 – a^2) + (c^2 + a^2) = [...]