Advertisements
Advertisements
Question
Find and correct the errors in the statement: (z + 5)2 = z2 + 25
Solution
L.H.S = (z + 5)2 = (z)2 + 2(z)(5) + (5)2 [(a + b)2 = a2 + 2ab + b2]
= z2 + 10z + 25 ≠ R.H.S
The correct statement is (z + 5)2 = z2 + 10z + 25
APPEARS IN
RELATED QUESTIONS
Find and correct the errors in the statement: 2x + 3y = 5xy
Find and correct the errors in the statement: 5y + 2y + y − 7y = 0
Find and correct the errors in the statement: (2x)2 + 5x = 4x + 5x = 9x
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
Find and correct the errors in the statement: `(3x^2)/(3x^2) = 0`
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`
Identify the errors and correct them
m(4m – 3) = 4m2 – 3
Identify the errors and correct them
– 3p2 + 4p – 7 = – (3p2 + 4p – 7)
