Identify the errors and correct them – 3p2 + 4p – 7 = – (3p2 + 4p – 7)

Identify the errors and correct them

– 3p² + 4p – 7 = – (3p² + 4p – 7)

Sum

– 3p² + 4p – 7 = – (3p² – 4p + 7)

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Chapter 3: Algebra - Exercise 3.2 [Page 86]

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

Find and correct the errors in the statement: x(3x + 2) = 3x² + 2

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

Find and correct the errors in the statement: 3x + 2x = 5x²

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

Find and correct the errors in the statement: (2x)² + 5x = 4x + 5x = 9x

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

Find and correct the errors in the statement : `3/(4x + 3) = 1/(4x)`

Find and correct the errors in the statement: `(7x + 5)/5 = 7x`

Identify the errors and correct them

7y² – y² + 3y² = 10y²