1.

Subtract: (i) − 5y2 from y2 (ii) 6xy from − 12xy (iii) (a − b) from (a + b) (iv) a (b − 5) from b (5 − a) (v) − m2 + 5mn from 4m2 − 3mn + 8 (vi) − x2 + 10x − 5 from 5x − 10 (vii) 5a2 − 7ab + 5b2 from 3ab − 2a2 −2b2 (viii) 4pq − 5q2 − 3p2 from 5p2 + 3q2 − pq

Answer»


Subtract:



(i) − 5y2 from y2



(ii) 6xy from − 12xy



(iii) (ab) from (a + b)



(iv) a (b − 5) from b (5 − a)



(v) − m2 + 5mn from 4m2
− 3mn + 8



(vi) − x2 + 10x − 5 from 5x
− 10



(vii) 5a2 − 7ab + 5b2
from 3ab − 2a2 −2b2



(viii) 4pq − 5q2 − 3p2
from 5p2 + 3q2 pq



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