Question

please solve this
it's urgent​

Answer 1

Answer:

(i) 5xy, -7xy, 3x²

5xy+(-7xy)+3x²

= -2xy+3x²

(ii) 4x²y, -3xy², 5xy², 5x²y

4x²y+5x²y+(-3xy²)+(-5xy²)

= 9x²y-8xy²

(iii) -7mn+5, 12mn+2, 8mn-8, -2mn-3

-7mn+5 + 12mn+2 + 8mn-8 + (-2mn-3)

= 11mn-4

(iv) a+b-3, b-a+3, a-b+3

a+b-3 + b-a+3 + a-b+3

= a+b+3