Mathematics
Statement 1: The product of two binomials is a trinomial, conversely if we factorise a trinomial we always obtain two binomial factors
Statement 2: The square of the difference of two terms = the sum of the same two terms x their difference.
Which of the following options is correct?
Both the statements are true.
Both the statements are false.
Statement 1 is true, and statement 2 is false.
Statement 1 is false, and statement 2 is true.
Factorisation
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Answer
The product of two binomials is a trinomial.
For example; (x + 2)(x + 3) = x(x + 3) + 2(x + 3)
= x2 + 3x + 2x + 6
= x2 + 5x + 6
Here, (x + 2) and (x + 3) are two binomials and their product x2 + 5x + 6 is a trinomial.
But, (x + 2)(x - 2) = x2 - 22
= x2 - 4
Here, (x + 2) and (x - 2) are two binomials but x2 - 4 is not a trinomial.
So, we can say that the product of two binomials is not always a trinomial.
Conversely, if we factorize a trinomial, we always obtain two binomial factors.
This is not always true:
Some trinomials cannot be factorized into binomials with real coefficients.
So, statement 1 is false.
The square of the difference of two terms = the sum of the same two terms × their difference.
L.H.S. = (a - b)2
= a2+ 2ab - b2
R.H.S. = (a + b) x (a - b)
= a2- b2
As, L.H.S. ≠ R.H.S.
So, statement 2 is false.
Hence, option 2 is the correct option.
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Related Questions
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(x - 2y) (x - 2y + 3)
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(x - 2y) (x - 2y - 3)
a(x - y)2 - by + bx is equal to :
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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.