Advertisements
Advertisements
प्रश्न
Find and correct the errors in the statement: (2a + 3b) (a − b) = 2a2 − 3b2
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: 2x + 3y = 5xy
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 + 4(2x) + 7 = 2x2 + 8x + 7
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: (y − 3)2 = y2 − 9
Find and correct the errors in the statement: `(3x^2 + 1)/(3x^2) = 1 + 1 = 2`
Find and correct the errors in the statement : `3/(4x + 3) = 1/(4x)`
Identify the errors and correct them
(4n)2 – 2n + 3 = 4n2 – 2n + 3
