Advertisements
Advertisements
प्रश्न
Find and correct the errors in the statement: (a + 4) (a + 2) = a2 + 8
Advertisements
उत्तर
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
APPEARS IN
संबंधित प्रश्न
Find and correct the errors in the statement: x(3x + 2) = 3x2 + 2
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 + 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 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: (y − 3)2 = y2 − 9
Find and correct the errors in the statement: (2a + 3b) (a − b) = 2a2 − 3b2
Identify the errors and correct them
7y2 – y2 + 3y2 = 10y2
Identify the errors and correct them
m(4m – 3) = 4m2 – 3
Identify the errors and correct them
– 3p2 + 4p – 7 = – (3p2 + 4p – 7)
