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Do you have to pass math in six grade?
The only thing that you really need to know is the quadratic formula, its uses in everyday life. that's all
If the right-hand side of a quadratic equation does not equal zero you need to the number or expression on the righthand side from both sides before you can use the quadratic formula?
subtract
The answer to 0 equals x2 plus x-20 using the quadratic formula?
You do not need the quadratic formula, since this can easily be factored in to linear factors.x2 + x - 20 = (x - 4)(x + 5), thus, x = 4 or 5.But, using the quadratic formula:(-b +- sqrt(b2 - 4ac))/2a = (-1 +- sqrt(1 + 80))/2(-1 + 9)/2 = 4(-1 - 9)/2 = -5
How do you solve a quadratic inequality when the expression is unfactorable?
Use the quadratic formula for the equality. Then, depending on the coefficient of x2 and the nature of the inequality [>, ≥, ≤, <], determine whether you need the open or closed intervals between the roots or beyond the roots.
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.
