Advertisements
Advertisements
प्रश्न
Find and correct the errors in the statement: (y − 3)2 = y2 − 9
Advertisements
उत्तर
L.H.S = (y − 3)2 = (y)2 − 2(y)(3) + (3)2 [(a − b)2 = a2 − 2ab + b2]
= y2 − 6y + 9 ≠ R.H.S
The correct statement is (y − 3)2 = y2 − 6y + 9
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(3x + 2) = 3x2 + 2
Find and correct the errors in the statement: 3x + 2x = 5x2
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: (a + 4) (a + 2) = a2 + 8
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`
Find and correct the errors in the statement : `3/(4x + 3) = 1/(4x)`
Identify the errors and correct them
– 3p2 + 4p – 7 = – (3p2 + 4p – 7)
