How do you do this problem ?

Question

Find a positive alue if the given variable so that the trinomial is factorable .
x^2 + bx + 13 ; b = ?


A ) 15

B ) 12

C ) 13

D ) 14

Answer 1

well 13 is a prime number so its only factors are 13 & 1
So the equasion would then be
(X+13)(x+1)
which when multiplied is
x^2 +1x+13x+13 or x^2+14x+13
so b would be 14
Answer (d)

Answer 2

Since the only two numbers that produce 13 when multiplied are 13 and 1, the answer is D)14. (X+13)(X+1).

Answer 3

14 is the right ans as 13 being prime has 1&13 as FACTORS
as x^2+14x+13=x^2+x+13x+13
=x(x+1)+13(x+1)
=(x+1)(x+13) ans

Answer 4

the only possible product of 13 that will give you a positive value is (13) x (1) , therefore the sum of the two numbers will give you 14.


the answer is

D) 14

Answer 5

x^2 + 14x +13