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

1.	Find and correct the errors in the statement: (a − 4) (a − 2) = a2 − 8
Answer» 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

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

Answer»

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