Subtract:
(i) $- 5 y^{2}$ from $y^{2}$
(ii) $6 x y$ from $- 12 x y$
(iii) $(a - b)$ from $(a + b)$
(iv) $a (b - 5)$ from $b (5 - a)$
(v) $- m^{2} + 5 m n$ from $4 m^{2} - 3 m n + 8$
(vi) $- x^{2} + 10 x - 5$ from $5 x - 10$
(vii) $5 a^{2} - 7 a b + 5 b^{2}$ from $3 a b - 2 a^{2} - 2 b^{2}$
(viii) $4 p q - 5 q^{2} - 3 p^{2}$ from $5 p^{2} + 3 q^{2} - p q$

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Solution

$i) y^{2} - (- 5 y^{2}) = 6 y^{2}$
$i i) - 12 x y - 6 x y = - 18 x y$
$i i i) a + b - a + b = 2 b$
$i v) 5 b - a b - a b + 5 a = 5 a + 5 b - 2 a b$
$v) 4 m^{2} - 3 m n + 8 + m^{2} - 5 m n = 5 m^{2} - 8 m n + 8$
$v i) 5 x - 10 + x^{2} - 10 x + 5 = x^{2} - 5 x - 5$
$v i i) 3 a b - 2 a^{2} - 2 b^{2} - 5 a^{2} + 7 a b - 5 b^{2} = - 7 a^{2} - 7 b^{2} + 10 a b$
$v i i i) 5 p^{2} + 2 q^{2} - p q - 4 p q + 5 q^{2} + 3 p^{2} = 8 p^{2} + 8 q^{2} - 5 p q$

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Similar questions

Subtract:

(i) − 5y²from y²

(ii) 6xy from − 12xy

(iii) (a − b) from (a + b)

(iv) a (b − 5) from b (5 − a)

(v) − m² + 5mn from 4m² − 3mn + 8

(vi) − x² + 10x − 5 from 5x − 10

(vii) 5a² − 7ab + 5b² from 3ab − 2a² −2b²

(viii) 4pq − 5q² − 3p² from 5p² + 3q²− pq

5 a^{2} - 7 a b + 5 b^{2}

3 a b - 2 a^{2} - 2 b^{2}

Question 3 (vii)

Subtract:

$5 a^{2} - 7 a b + 5 b^{2} f r o m 3 a b - 2 a^{2} - 2 b^{2}$

Question 3 (viii)

Subtract:

$4 p q - 5 q^{2} - 3 p^{2} f r o m 5 p^{2} + 3 q^{2} - p q$

5 a^{2} - 7 a b + 5 b^{2}

3 a b - 2 a^{2} - 2 b^{2}

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