Question-Mathematics - Algebra - Ask NCERT class 8 Algebraic Expressions and Identities with solution questions answer. All ncert questions Answers for class 8 subject Mathematics chapter Algebraic Expressions and Identities and topic Algebra

**Question 1.** **Asked on :**18 November 2022:11:05:37 AM

If p = 2 - a, then prove that a^{3 }+ 6ap + p^{3 }- 8 = 0

*-Added by Master Mind* See More Answers **Mathematics** » **Algebra**

**Answer:**

Given: p = 2 - a

Putting the value of p into p(x)

P(x) = a^{3} + 6ap + p^{3} - 8 = 0

= a^{3} + 6a(2 - a) + (2 - a)^{3} - 8 = 0

= a^{3} + 12a - 6a^{2} + 2^{3} - 3x2^{2}xa + 3x2xa^{2} - a^{3} - 8 = 0

= a^{3} + 12a - 6a^{2} + 8 - 12a + 6a^{2} - a^{3} - 8 = 0

= 0

Hence proved

*-Answered by Master Mind* On 18 November 2022:11:06:58 AM

**Question 2.** **Asked on :**18 November 2022:11:06:33 AM

Solve the equation 6(7b - 4) = 60 for b.

*-Added by ATP Admin* See More Answers **Mathematics** » **Algebra**

**Answer:**

Given equation is 6(7b - 4) = 60 **Step by Step explanation**

7b - 4 = 606

7b - 4 = 10

7b = 10 + 4

7b = 14

b = 147 = 2 **Answer**

*-Answered by ATP Admin* On 09 July 2019:11:53:03 PM

**Question 3.** **Asked on :**18 November 2022:01:05:56 PM

*-Added by Akki chauhan* See More Answers **Mathematics** » **Algebra**

**Answer:**

*-Answered by Shalu Shukla* On 01 March 2019:03:47:38 PM

**Question 4.** **Asked on :**18 November 2022:01:06:07 PM

Q1. Simplify;

3a - 2b - ab - (a-b+ab)+ 3ab +b - a

*-Added by Master Purushottam* See More Answers **Mathematics** » **Algebra**

**Answer:**

3a-2b-ab-(a-b+ab)+3ab+b-a

take same terms like this

3a-a-a=a

-2b+b+b=0

-ab-ab+3ab= -2ab+3ab=ab

=a+0+ab

*-Answered by Nishant Verma* On 17 October 2019:02:39:08 PM

**Answer:**

3a-2b-ab-(a-b+ab)+3ab+b-a

take same terms like this

3a-a-a=a

-2b+b+b=0

-ab-ab+3ab= -2ab+3ab=ab

=a+0+ab

*-Answered by Master Purushottam* On 22 August 2019:08:55:31 PM

**Answer:**

3a-2b-ab-(a-b+ab)+3ab+b-a

take same terms like this

3a-a-a=a

-2b+b+b=0

-ab-ab+3ab= -2ab+3ab=ab

=a+0+ab

*-Answered by Himanshi Verma* On 22 March 2019:05:17:37 PM

Mathematics - Algebra - Ask NCERT

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