CBSE > Class 08 > Mathematics | CBSE Board | Homework Help

Here’s how it works: Assume that we have two variables a and b, and that: a = b Multiply both sides by a to get: a2 = ab Subtract b2 from both sides to get: a2 – b2 = ab – b2 This is the tricky part: Factor the left side (using FOIL from algebra) to get (a + b)(a – b) and factor out b from the right side to get b(a – b). If you’re not sure how FOIL or factoring works, don’t worry—you can check that this all works by multiplying everything out to see that it matches. The end result is that our equation has become: (a + b)(a – b) = b(a – b) Since (a – b) appears on both sides, we can cancel it to get: a + b = b Since a = b (that’s the assumption we started with), we can substitute b in for a to get: b + b = b Combining the two terms on the left gives us: 2b = b Since b appears on both sides, we can divide through by b to get: 2 = 1

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Pp2 Gmer 3 years, 3 months ago

1=2 proved

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A 5m60cm high vertical pole casts a shadow 3m20cm long find at the same time 1. The length of the shadow cast by another pole 10m50cm high 2.the height of a pole which casts a shadow 5m long

Posted by Barkha Pandey 3 years, 3 months ago

CBSE > Class 08 > Mathematics

0 answers

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Help

Posted by Prince Rajawat 3 years, 3 months ago

CBSE > Class 08 > Mathematics

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Find the amount and compound it interest on 10000 rupees for one and one four years at 8 and half percent compound in annually

Posted by Shivi Agarwal 3 years, 3 months ago

CBSE > Class 08 > Mathematics

0 answers

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What is inverse variation

Posted by Rishabh Kumar 3 years, 3 months ago

CBSE > Class 08 > Mathematics

2 answers

Barkha Pandey 3 years, 3 months ago

the relationships between variables that are represented in the form of y = k/x, where x and y are two variables and k is the constant value

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Priyansh Arora 3 years, 3 months ago

When xy remainis constant and increase in x causes decrease in y or vice a versa it is a inverse or indirect variation

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98a^2-72b^2

Posted by Rahul Verma 3 years, 3 months ago

CBSE > Class 08 > Mathematics

1 answers

Priyancee Agarwal 3 years, 3 months ago

No answer will come because they are unlike terms

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1/2=8010

Posted by Sameeksha Choudhary 3 years, 3 months ago

CBSE > Class 08 > Mathematics

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9801 in the digit which is the unit digit and why

Posted by Nathu Das 3 years, 3 months ago

CBSE > Class 08 > Mathematics

1 answers

Srilakshmi Nandini Bejavada 3 years, 3 months ago

The positive square root of x+y+2 root xy, where x>0, y>0 is

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Solve the following equations and check your results. 3x≈2x+18.

Posted by Yutika Yuti 3 years, 3 months ago

CBSE > Class 08 > Mathematics

1 answers

Preeti Dabral 3 years, 3 months ago

3x = 2x + 18
3x – 2x = 18 ... [Transposing 2x to L.H.S]
{tex}\therefore{/tex} x = 18 this is the required solution.
Verification,
L.H.S. = 3x = 3 {tex}\times{/tex} 18 = 54
R.H.S. = 2x + 18 = 2 {tex}\times{/tex} 18 + 18 = 36 + 18 = 54
Therefore, L.H.S = R.H.S

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5t=4 ;t=3

Posted by Pranjal Jadhav 3 years, 3 months ago

CBSE > Class 08 > Mathematics