Advertisements
Advertisements
Question
Find and correct the errors in the statement: (2x)2 + 4(2x) + 7 = 2x2 + 8x + 7
Solution
L.H.S = (2x)2 + 4(2x) + 7 = 4x2 + 8x + 7 ≠ R.H.S
The correct statement is (2x)2 + 4(2x) + 7 = 4x2 + 8x + 7
APPEARS IN
RELATED QUESTIONS
Find and correct the errors in the statement: 4(x − 5) = 4x − 5
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 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 gives (−3)2 + 5 (−3) = −9 − 15 = −24
Find and correct the errors in the statement: (a + 4) (a + 2) = a2 + 8
Find and correct the errors in the statement: `(3x^2 + 1)/(3x^2) = 1 + 1 = 2`
Find and correct the errors in the statement: `(4x + 5)/(4x) = 5`
Find and correct the errors in the statement: `(7x + 5)/5 = 7x`
Identify the errors and correct them
(4n)2 – 2n + 3 = 4n2 – 2n + 3
