Find and Correct the Errors in the Statement: (A + 4) (A + 2) = Asquare2 + 8 - Mathematics

Find and correct the errors in the statement: (a + 4) (a + 2) = a² + 8

L.H.S. = (a + 4) (a + 2) = (a)² + (4 + 2) (a) + 4 × 2

= a² + 6a + 8 ≠ R.H.S

The correct statement is (a + 4) (a + 2) = a² + 6a + 8

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 14 | Page 229

Find and correct the errors in the statement: 5y + 2y + y − 7y = 0

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: (3x + 2)² = 3x² + 6x + 4

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: (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: (a − 4) (a − 2) = a² − 8

Find and correct the errors in the statement: `(3x^2)/(3x^2) = 0`