Advertisements
Advertisements
प्रश्न
Find and correct the errors in the statement: (2a + 3b) (a − b) = 2a2 − 3b2
Advertisements
उत्तर
L.H.S. = (2a + 3b) (a − b) = 2a × a + 3b × a − 2a × b − 3b × b
= 2a2 + 3ab − 2ab − 3b2 = 2a2 + ab − 3b2 ≠ R.H.S.
The correct statement is (2a + 3b) (a − b) = 2a2 + ab − 3b2
APPEARS IN
संबंधित प्रश्न
Find and correct the errors in the statement: 4(x − 5) = 4x − 5
Find and correct the errors in the statement: x + 2x + 3x = 5x
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 + 5x = 4x + 5x = 9x
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: `(4x + 5)/(4x) = 5`
Find and correct the errors in the statement: `(7x + 5)/5 = 7x`
Identify the errors and correct them
(x – 2)(x + 3) = x2 – 6
Identify the errors and correct them
– 3p2 + 4p – 7 = – (3p2 + 4p – 7)
