0
You don't need to use the quadratic formula because:-
5r2 = 80
Divide both sides by 5:
x2 = 16
Square root both sides:
r = 4
What else can I help you with?
What is the quadratic formula for?
The quadratic formula is used to solve the quadratic equation. Many equations in which the variable is squared can be written as a quadratic equation, and then solved with the quadratic formula.
How do you solve 2x squared - 36x by using a quadratic formula?
-34
How would you solve the equation x squared equals 17x - 6?
11
Solve this quadratic equation x2 plus 5x plus 3 equals 0?
I suggest you use the quadratic formula. In this case, a = 1, b = 5, c = 3.
Solve a2 plus 30a plus 56 equals 0?
a2+30a+56=0 , solve for a Using the quadratic formula, you will find that: a=-2 , a=-28
How do you solve 0 equals x squared minus ten x plus 16?
x^(2) - 10x + 16 = 0 Factors of '16', which are, 1,2,4,8,16. Select two numbers from this list that add/subtract to '10' . They are '2' and '8'. Setting up brackets ( x 2)(x 8) Since '16' is positive(+), then both signs must be the same. Since '10x' is negative (-) , then both signs are negative. Hence (x - 2)(x - 8 ) = 0 When x - 2 = 0 x = 2 & when x - 8 = 0 x = 8 So the two answers are ,2, & ,8, .
What is the quadratic formula for?
The quadratic formula is used to solve the quadratic equation. Many equations in which the variable is squared can be written as a quadratic equation, and then solved with the quadratic formula.
How do you solve x squared minus ten x plus six equals zero?
It can be solved by using the quadratic equation formula.
How do you solve 2x squared - 36x by using a quadratic formula?
-34
X plus 5 squared plus x - 2 squared 37 solve using the quadratic formula?
You can't because it is not a quadratic equation.
How do you solve this equation to the nearest hundredth x squared -7x -12 equals 0?
Using the quadratic equation formula: x = 8.42 or x = -1.42
How do you solve 3x squared minus 2x plus 7 equals 0?
I suggest you use the quadratic formula, with a = 3, b = -2, c = 7.
How do you solve 12x squared plus 9x plus 15 equals 0 with quadratic formula?
It can't be solved because the discriminant of the given quadratic equation is less than zero meaning it has no real roots.
How do you solve 0 equals x squared plus x - 15?
x2+x-15 = 0 Using the quadratic equation formula: x = 3.405124838 or x = -4.405124838
How do you solve x squared minus 10x plus 29 equals zero?
Use the quadratic formula, with a = 1, b = -10, c = 29.Use the quadratic formula, with a = 1, b = -10, c = 29.Use the quadratic formula, with a = 1, b = -10, c = 29.Use the quadratic formula, with a = 1, b = -10, c = 29.
How do i solve 2x squared plus 9x plus 2?
Use the quadratic formula. x = -4.265564 or -0.234436
What is the solution to 4 equals 2b plus b squared?
To find the solution to this equation, you need to rearrange the terms and solve for the variable. 4 = 2b + b^2 can be rewritten as b^2 + 2b - 4 = 0. You can then solve this quadratic equation by factoring, completing the square, or using the quadratic formula.
