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

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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(3x + 2) = 3x² + 2

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 statement: (z + 5)² = z² + 25

Find and correct the errors in the statement: (2a + 3b) (a − b) = 2a² − 3b²

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

Identify the errors and correct them

7y² – y² + 3y² = 10y²

Identify the errors and correct them

m(4m – 3) = 4m² – 3

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