Subtract-a- x2 nbsp- ndash- 1 from x2 - 1-b- 2x2 ndash- 11x - 3 from x2 - 15x nbsp- ndash- 1-c- 3xy nbsp- 5yz nbsp- ndash- 7zx from 5xy nbsp- ndash- 2yz ndash- 2zx - 10xyz-d- 3a2b - 5ab nbsp- ndash- 7ab2 from 2a2b - 8ab - 8ab2- nbsp-

A.x2 #160;+ #160;1 #160; #160;x2 #160; #160;1=x2 #160;+ #160;1 #160; #160;x2 #160;+ #160;1=2b. #160; #160; #160;x2 #160;+ # ...

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Byju's Answer

Standard VIII

Mathematics

Addition and Subtraction of Like and Unlike Terms

Subtract: (a...

Question

Subtract:
(a) x² – 1 from x² + 1
(b) 2x² – 11x + 3 from x² + 15x – 1
(c) 3xy + 5yz – 7zx from 5xy – 2yz – 2zx + 10xyz
(d) 3a²b + 5ab – 7ab² from 2a²b + 8ab + 8ab²

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Solution

$(a) . (x^{2} + 1) - (x^{2} - 1) = x^{2} + 1 - x^{2} + 1 = 2 (b) . (x^{2} + 15 x - 1) - (2 x^{2} - 11 x + 3) = x^{2} + 15 x - 1 - 2 x^{2} + 11 x - 3 = - x^{2} + 26 x - 4 (c) . (5 xy - 2 yz - 2 zx + 10 xyz) - (3 xy + 5 yz - 7 zx) = 5 xy - 2 yz - 2 zx + 10 xyz - 3 xy - 5 yz + 7 zx = 2 xy - 7 yz + 5 zx + 10 xyz (d) . (2 a^{2} b + 8 ab + 8 {ab}^{2}) - (3 a^{2} b + 5 ab - 7 {ab}^{2}) = 2 a^{2} b + 8 ab + 8 {ab}^{2} - 3 a^{2} b - 5 ab + 7 {ab}^{2} = - a^{2} b + 3 ab + 15 {ab}^{2}$

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Similar questions

Q. Subtract

3 x y + 5 y z - 7 z x

from

5 x y - 2 y z - 2 z x + 10 x y z

Q. Question 4(ii)
Subtract 3 xy + 5 yz - 7 zx from 5 xy - 2 yz - 2 zx +10 xyz

Q. (i)Subtract

4 a - 7 a b + 3 b + 12

from

12 a - 9 a b + 5 b - 3

.
(ii)Subtract

3 x y + 5 y z - 7 z x

from

5 x y - 2 y z - 2 z x + 10 x y z

.
(iii)Subtract

4 p^{2} q - 3 p q + 5 p q^{2} - 8 p + 7 q - 10

from

18 - 3 p - 11 q + 5 p q - 2 p q^{2} + 5 p^{2} q

Subtract:
(i) $4 a - 7 a b + 3 b + 12$ from $12 a - 9 a b + 5 b - 3$
(ii) $3 x y + 5 y z - 7 x z$ from $5 x y - 2 y z - 2 x z + 10 x y z$
(iii) $4 p^{2} q - 3 p q + 5 p q^{2} - 8 p + 7 q - 10$ from $18 - 3 p - 11 q + 5 p q - 2 p q^{2} + 5 p^{2} q$

Q. Subtract the second polynomial from the first.

(i)

x^{2} - 9 x + \sqrt{3}; - 19 x + \sqrt{3} + 7 x^{2}

(ii)

2 a b^{2} + 3 a^{2} b - 4 a b; 3 a b - 8 a b^{2} + 2 a^{2} b

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Subtract: (a) x2 – 1 from x2 + 1 (b) 2x2 – 11x + 3 from x2 + 15x – 1 ​(c) 3xy + 5yz – 7zx from 5xy – 2yz – 2zx + 10xyz ​(d) 3a2b + 5ab – 7ab2 from 2a2b + 8ab + 8ab2

Subtract:
(a) x² – 1 from x² + 1
(b) 2x² – 11x + 3 from x² + 15x – 1
(c) 3xy + 5yz – 7zx from 5xy – 2yz – 2zx + 10xyz
(d) 3a²b + 5ab – 7ab² from 2a²b + 8ab + 8ab²