Question

1. Add:
(i) 3x, 7x
(iii) 2xy , 5xy, - xy
(v) 2x²,- 3x2, 7x2
(vii) 6a?, – 4a?. 10a, - 8a
(ii) 7y, -9y
(iv) 3x, 2y
(vi) 7xqz, – 5xyz, 9xgz, - 8xgz
(viii) x2 - a?, - 5x2 + 2a”, - 4x2 + 4a2​

Answer 1

Answer:

(i) 10x

ii) -2y

iii)6xy

iv)3x+2y

v)2x²-8

vi) 7xqz-5xyz+xgz

vii) 4a²

viii) idk

Answer 2

Answer:

i) 3x,7x

= 3x+7x

=10xans.

iii) 2xy,5xy,-xy

= 2xy+5xy+(-xy) ( + - = -)

= 2xy+5xy-xy

= 7xy - xy

= 6xy ans.

v) 2x^2, -3x^2,7x^2

= 2x^2+(-3x^2)+7x^2

= 2x2- 3x2+7x2 (- + = -)

= - x2+7x2

= 6x2ans.

ii) 7y,-9y

=7y+(-9y)

= 7y-9y

= -2y ans.

iv) 3x+2y ( here variables are different so it cannot be added)

3x+2y ans.