0
b2-4ac
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Can the answer to a quadratic equation be a decimal?
Yes. You can calculate the two roots of a quadratic equation by using the quadratic formula, and because there are square roots on the quadratic formula, and if the radicand is not a perfect square, so the answer to that equation has decimal.
What is the quadratic formula cannot be used to solve an equation if the coefficient of the equation x square term is?
The quadratic formula cannot be used to solve an equation if the coefficient of the equation x square term is what?
What does quadratic equations using the factoring method means?
It means you are required to "solve" a quadratic equation by factorising the quadratic equation into two binomial expressions. Solving means to find the value(s) of the variable for which the expression equals zero.
How do you use the quadratic formula to solve 4x 2 - 5x plus 10?
If the equation is 4x squared - 5x + 10 = 0, then you set a = 4, b = -5, c = 10. Replace these numbers in the quadratic formula.
If you are given a quadratic relationship in factored form how can you find an equivalent expression in expanded form?
you have to use F.O.I.L method to simplify it.
What is the expression b2 4ac under the radical sign in the quadratic formula?
The discriminant.
What part of the a quadratic formula tells you when the quadratic equation can be solved by factoring?
The discriminant
Can all quadratic expressions be factorised?
Only when the discriminant of the quadratic expression is equal to or greater than zero
The is the name of the number under the radical symbol in the quadratic formula?
discriminant
What is the name of the number under the radical symbol in the quadratic formula?
The discriminant
How do you know whether it is possible to factorise a quadratic expression?
Look in an advanced maths book.Improved answer:-If the discriminant of the quadratic expression is less than zero then it's not possible to factor it.
What is the discriminate of x2 plus 3x plus 4?
The discriminant of the given quadratic expression is -7
What statements must be true of an equation before you can use the quadratic formula to find the solutions?
That the discriminant of the quadratic equation must be greater or equal to zero for it to have solutions. If the discriminant is less than zero then the quadratic equation will have no solutions.
What happens in the quadratic formula that yields no real solutions?
If the discriminant of b2-4ac in the quadratic equation formula is less than zero then the equation will have no real roots.
Can you write a parody to Up We Go by Lights about the quadratic formula the discriminant and the nature of the roots?
No.
What is the expression b2-4ac under the radical sign in the quadratic formula?
6
What is the discriminant in the polynomial x2 plus 4x plus 5?
It is: 16-20 = -4 which means that the given quadratic expression has no real roots.
