Best Answer

For it to have two equal roots then the discriminant of the quadratic equation must equal zero:-

242-4*(b) = 0

576 -4*(b) = 0

-4*(b) = -576

Divide both sides by -4 to find the value of b:

b = 144

So the quadratic equation is: x2+24x+144 = 0

When factored: (x+12)(x+12) = 0

Therefore: x = -12 or x = -12

Q: What value of b makes this poynomial a perfect square x2 plus 24x plus plus b?

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49

49

-12

(b/2)^2= 64

The answer will depend on what c is!If the trinomial is ax^2 + bx + c then the required value of c is (b^2)/(4a)

Related questions

What value, in place of the question mark, makes the polynomial below a perfect square trinomial?x2 + 12x+ ?

6.25

None does, since there is no polynomial below.

81.

16

49

49

26

38

64

-12

144