Mathematics
Assertion (A): If , then . Reason (R): x² - 2x - 1 can be written as (x - 1)². 1. A is true, R is false 2. A is false, R is true 3. Both A and R are true 4. Both A and R are false
Related Questions
If a − b + c = 6 and a2 + b2 + c2 = 38, then ab + bc − ca is :
0
1
-1
not possible
Assertion (A): (26)3 + (−15)3 + (−11)3 = 3 × 26 × 15 × 11.
Reason (R): If x + y + z = 0, then x3 + y3 + z3 = 3xyz
A is true, R is false
A is false, R is true
Both A and R are true
Both A and R are false
Assertion (A): (1 - 3x)3 can be expanded as 1 - 27x3 - 9x - 27x2.
Reason (R): (a - b)3 = a3 - b3 - 3ab(a - b)A is true, R is false
A is false, R is true
Both A and R are true
Both A and R are false
The value of (−28)3 + (18)3 + (10)3 is
15120
-15120
-5040
none of these