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 + 2 + 4 = 15
उत्तर
For x = −3,
x2 + 5x + 4 = (−3)2 + 5 (−3) + 4 = 9 − 15 + 4 = 13 − 15 = −2
APPEARS IN
संबंधित प्रश्न
Find and correct the errors in the statement: 2x + 3y = 5xy
Find and correct the errors in the statement: (2x)2 + 4(2x) + 7 = 2x2 + 8x + 7
Find and correct the errors in the statement: (y − 3)2 = y2 − 9
Find and correct the errors in the statement: (z + 5)2 = z2 + 25
Find and correct the errors in the statement: `(3x^2 + 1)/(3x^2) = 1 + 1 = 2`
Find and correct the errors in the statement: `(3x)/(3x + 2) = 1/2`
Find and correct the errors in the statement: `(7x + 5)/5 = 7x`
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)
