MCQ Class 8 Maths Ganita Prakash Chapter 6 We Distribute, Yet Things Multiply Advertisement 1. (a − b)² equals: a² − 2ab + b² a² + 2ab + b² a² − b² abQuestion 1 of 202. (a + b)(a − b) equals: a² + b² a² − b² ab a²Question 2 of 203. 65² equals: 4225 3600 3025 4000Question 3 of 204. 55² equals: 3025 3600 4225 2500Question 4 of 205. Which identity is called Identity 1A? (a−b)² (a+b)² a²−b² abQuestion 5 of 206. Identity 1B represents: (a+b)² (a−b)² a²−b² abQuestion 6 of 207. Identity 1C represents: (a+b)² (a−b)² (a+b)(a−b) abQuestion 7 of 208. 2(a² + b²) equals: (a+b)² (a+b)² + (a−b)² ab a²Question 8 of 209. a² − b² equals: (a+b)(a−b) (a+b)² ab a²Question 9 of 2010. 98 × 102 equals: 10000 − 4 9996 10000 9600Question 10 of 2011. 45 × 55 equals: 2475 2500 − 25 2000 2600Question 11 of 2012. Which expression shows mistake? 2(x−1)=2x−2 (a+b)²=a²+2ab+b² 5w²+6w=11w² ab+ba=2abQuestion 12 of 2013. k² + 2k represents: Pattern expression Constant Equation IdentityQuestion 13 of 2014. Step k circles equal: k² k² + 2k k 2kQuestion 14 of 2015. (k+1)² −1 simplifies to: k² k²+2k k²+1 2kQuestion 15 of 2016. k(k+2) equals: k² + 2k k² 2k kQuestion 16 of 2017. k(k+1)+k equals: k² k² + 2k 2k kQuestion 17 of 2018. Area of square is: side side² 2×side side+sideQuestion 18 of 2019. (m+n)² − 4mn equals: (m−n)² (m+n)² mn m²Question 19 of 2020. x² − xy equals: x(x+y) x(x−y) xy x²Question 20 of 20 Loading...
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