Question

1. a^2-1/x^2+7x-7/x
2. a^3+6ab-8b^3+1
3. a^4-7a^2+1
4. a^4+a^2b^2+b^4

Answer 1

Answer:

Integers, Fractions and Decimals, Data Handling, Simple equation, Lines and angles, The triangles and its properties, Congruence of triangles, Comparing quantities, Rational numbers, Practical geometry.