Question

4. Find the sum of the following algebraic expressions:
(i) 5xy, -7xy, 3x2
(ii) 4x²y, – 3xy?, – 5xy2, 5x²y
(iii) - 7mn + 5, 12mn + 2, 8mn - 8, -2mn - 3
(iv) a + b - 3, b – a + 3, a – b + 3​
please answer fast
it is urgent

Answer 1

Answer:

(i) 5xy, -7xy, 3x^2

5xy+(-7xy)+3x^2

5xy-7xy+3x^2

-2xy+3x^2

(ii) 4x^2y, – 3xy^2, – 5xy^2, 5x^2y

4x^2y+5x^2y+(– 3xy^2)+(– 5xy^2)

9x^2y-8xy^2

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

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

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

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

-9mn+20mn+7-11

11mn-4

(iv) a + b - 3, b – a + 3, a – b + 3

a + b - 3+b – a + 3+a – b + 3

2a-a+2b-b+6-3

a+b+3

Answer 2

Answer:

ha u thought u can cheat Lol

yo thats from our book lol