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 - Mathematics

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

For x = −3,

x² − 5x + 4 = (−3)² − 5 (−3) + 4 = 9 + 15 + 4 = 28

shaalaa.com

Is there an error in this question or solution?

Chapter 14: Factorisation - Exercise 14.4 [Page 229]

Chapter 14 Factorisation
Exercise 14.4 | Q 10.2 | Page 229

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

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

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: (a + 4) (a + 2) = a² + 8

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

6xy + 3xy = 9x²y²

Identify the errors and correct them

m(4m – 3) = 4m² – 3

Identify the errors and correct them

(x – 2)(x + 3) = x² – 6