Question

SE 13B
1. Add the following expressions :
(i) 2x2, - 5x2, - x2, 6x2
(ii) x2 - 2xy + 3y2, 5y2 + 3xy - 6x2
(ii) 2x + 3y - 7z, 3y + 2 – 3x, 22 – 4y – x
(iv) 2ab + 3bc - 5ca, 4bc - 3ab + 7ca, 2ca - ab - 5bc
(v) 3x3 + 2x2 - 6x + 3, 2x3 - 3x2 - x - 4, 1+ 2x - 3x2 - 4x3
(vi) 3n2 + 5mn - 6m2, 2m2 - 3mn - 4n², 2mn - 3m2 - 7n2
(vii) 323 – z2 + 5, 1-22 + z2, 3 + 2z – z3​

Answer 1

Answer:

3455664446++-55__"5&5+(

Answer 2

Answer:

(iv) 2ab+2bc+4ca

(vi) -8n²+4mn-7m²