Q.2 (i) Identify the terms and their factors in the following expressions show the terms and factors by tree diagrams.
(a) x – 3
(b) $$1 + x + x^2$$
(c) $$y – y^3$$
(d)$$5xy^2 + 7x^2y$$
(e) $$-ab + 2b^2 – 3a^2$$

(a) Expression: ( x-3 )
Term I = x
Term II = -3
(b) Expression: $$1 + x + x^2$$
Term I = 1
Term II = x
Term III = $$x^2$$ = x × x
(c) Expression: $$y – y^3$$
Term I = y
Term II = $$-y^3$$ = -y × -y ×-y
(d) Expression: $$5xy^2 + 7x^2y$$
Term I = $$5xy^2$$ = 5×x×y×y
Term II = $$7x^2y$$ = 7× x × x × y
(e) Expression: $$-ab + 2b^2 – 3a^2$$
Term I = -ab = -a × b
Term II = $$2b^2$$ = 2 × b × b
Term III = $$-3a^2$$ = -3 ×a×a