Identify the errors and correct them 6xy + 3xy = 9x2y2

Identify the errors and correct them

6xy + 3xy = 9x²y²

Sum

6xy + 3xy = (6 + 3)xy
= 9xy

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Chapter 3: Algebra - Exercise 3.2 [Page 86]

Chapter 3 Algebra
Exercise 3.2 | Q 6. (ii) | Page 86

Find and correct the errors in the statement: 2x + 3y = 5xy

Find and correct the errors in the statement: (2x)² + 4(2x) + 7 = 2x² + 8x + 7

Find and correct the errors in the following mathematical statement. Substituting x = −3 in

x² + 5x + 4 gives (−3)² + 5 (−3) + 4 = 9 + 2 + 4 = 15

Find and correct the errors in the following mathematical statement. Substituting x = −3 in x² + 5x gives (−3)² + 5 (−3) = −9 − 15 = −24

Find and correct the errors in the statement: (y − 3)² = y² − 9

Find and correct the errors in the statement: `(3x)/(3x + 2) = 1/2`

Find and correct the errors in the statement: `(4x + 5)/(4x) = 5`

Identify the errors and correct them

7y² – y² + 3y² = 10y²

Identify the errors and correct them

(4n)² – 2n + 3 = 4n² – 2n + 3

Identify the errors and correct them

(x – 2)(x + 3) = x² – 6