Q. 44.6( 11 Votes )

# Subtract:

(i) –2xy + 3xy^{2} from 8xy;

(ii) a – b – 2c from 4a + 6b – 2c.

Answer :

Given problem asks to subtract

(i) –2xy + 3xy^{2} from 8xy

⇒ 8xy – ( –2xy + 3xy^{2} )

⇒ 8xy +2xy –3xy^{2}

⇒ 10xy –3xy^{2}

(ii) a – b – 2c from 4a + 6b – 2c

⇒ 4a +6b –2c – (a– b – 2c)

⇒ 4a +6b –2c –a + 2c +b

While adding or subtracting, the like term`s numerical coefficient are added or subtracted

⇒ (4–1) a + (6 +1) b +( –2 +2) c

⇒ 3a +7b

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RELATED QUESTIONS :

Simplify:

(i) 7x – 9y + 3 – 3x – 5y + 8;

(ii) 3x^{2} + 5xy – 4y^{2} + x^{2} – 8xy – 5y^{2}.

Add:

(i) 5a + 3b, a – 2b and 3a + 5b;

(ii) x^{3} – x^{2}y + 5xy^{2} + y, –x^{3} – 9xy^{2} + y, and 3x^{2}y + 9xy^{2}.

Subtract:

(i) –2xy + 3xy^{2} from 8xy;

(ii) a – b – 2c from 4a + 6b – 2c.

Karnataka Board - Mathematics Part I