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
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(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
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Answer:
ha u thought u can cheat Lol
yo thats from our book lol
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