Mathematics
Assertion (A) : The value of k so that the factors of are same is . Reason (R) : (x + a) (x + b) = x2 + (a + b)x + ab. 1. Both A and R are correct, and R is the correct explanation for A. 2. Both A and R are correct, and R is not the correct explanation for A. 3. A is true, but R is false. 4. A is false, but R is true.
Related Questions
Assertion (A) : 25x2 - 5x + 1 is a perfect square trinomial.
Reason (R) : Any trinomial which can be expressed as x2 + y2 + 2xy or x2 + y2 - 2xy is a perfect square trinomial.
Both A and R are correct, and R is the correct explanation for A.
Both A and R are correct, and R is not the correct explanation for A.
A is true, but R is false.
A is false, but R is true.
Assertion (A) : x2 + 7x + 12
= x2 + (4 + 3)x + 3 x 4
= x2 + 4x + 3x + 3 x 4
= (x + 4)(x + 3)
Reason (R) : To factorise a given trinomial, the product of the first and the last term of the trinomial is always the sum of the two parts when we split the middle term.
Both A and R are correct, and R is the correct explanation for A.
Both A and R are correct, and R is not the correct explanation for A.
A is true, but R is false.
A is false, but R is true.
Assertion (A) : There are two values of b so that x2 + bx - 24 is factorisable.
Reason (R) : Two values have:
Product = -24 and sum = 2.
Both A and R are correct, and R is the correct explanation for A.
Both A and R are correct, and R is not the correct explanation for A.
A is true, but R is false.
A is false, but R is true.
Factorise :
6x3 - 8x2