Advertisements
Advertisements
प्रश्न
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
Advertisements
उत्तर
For x = −3,
x2 − 5x + 4 = (−3)2 − 5 (−3) + 4 = 9 + 15 + 4 = 28
संबंधित प्रश्न
Find and correct the errors in the statement: x(3x + 2) = 3x2 + 2
Find and correct the errors in the statement: 5y + 2y + y − 7y = 0
Find and correct the errors in the statement: (3x + 2)2 = 3x2 + 6x + 4
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 statement: (z + 5)2 = z2 + 25
Find and correct the errors in the statement: (2a + 3b) (a − b) = 2a2 − 3b2
Find and correct the errors in the statement: (a − 4) (a − 2) = a2 − 8
Identify the errors and correct them
m(4m – 3) = 4m2 – 3
Identify the errors and correct them
(x – 2)(x + 3) = x2 – 6
Identify the errors and correct them
– 3p2 + 4p – 7 = – (3p2 + 4p – 7)
