Chapter 13 – Exponents and Powers

5.What should be taken away from 3x^2–4y^2+5xy+20 to obtain –x^2–y^2+6xy+20 ? 5.What should be taken away from 3x^2–4y^2+5xy+20 to obtain –x^2–y^2+6xy+20 ? October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,

4. (b) What should be subtracted from 2a+8b+10 to get –3a+7b+16 ? 4. (b) What should be subtracted from 2a+8b+10 to get –3a+7b+16 ? October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,

4.(a) What should be added to x^2+xy+y^2 to obtain 2x^2+3xy? 4.(a) What should be added to x^2+xy+y^2 to obtain 2x^2+3xy? October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,

3.Subtract: (viii) 4pq–5q^2–3p^2 from 5p^2+3q^2–pq 3.Subtract: (viii) 4pq–5q^2–3p^2 from 5p^2+3q^2–pq October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,

3.Subtract: (vii) 5a^2–7ab+5b^2 from 3ab–2a^2–2b^2 3.Subtract: (vii) 5a^2–7ab+5b^2 from 3ab–2a^2–2b^2 October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,

3.Subtract: (vi) –x^2+10x–5 from 5x–10 3.Subtract: (vi) –x^2+10x–5 from 5x–10 October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,

3.Subtract: (v) –m^2+5mn from 4m^2–3mn+8 3.Subtract: (v) –m^2+5mn from 4m^2–3mn+8 October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,

3.Subtract: (iv) a(b–5) from b(5–a) 3.Subtract: (iv) a(b–5) from b(5–a) October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,

3.Subtract: (iii) (a–b) from (a+b) 3.Subtract: (iii) (a–b) from (a+b) October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,

3.Subtract: (ii) 6xy from –12xy 3.Subtract: (ii) 6xy from –12xy October 9, 2020 Category: Chapter 13 - Exponents and Powers , Maths , NCERT Class 7 ,