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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
What else can I help you with?
What is Xsquared equals -8x plus 15 using the quadratic formula?
X= 1.567764363, -9.567764363
Can 5x2 plus 2x-4 equals 2x2 be solved using the quadratic formula?
Yes
Solve this quadratic equation x2 plus 2x - 22 equals 0?
Using the quadratic equation formula:- x = 3.795831523 or x = -5.795831523
How do you solve 0 equals x squared minus ten x plus 16?
Solve using the quadratic formula
What is the answer by using the quadratic formula 2a -46a plus 252 0?
The answer of the equation 2a -46a plus 252 = 0 using the quadratic formula is a = 5.25.
What is 9x2 equals 10x plus 2?
It is a quadratic equation and its solutions can be found by using the quadratic equation formula.
Can 5x2 plus 2x-4 equals 2x2 be solved using the quadratic formula?
Yes
What is Xsquared equals -8x plus 15 using the quadratic formula?
X= 1.567764363, -9.567764363
What is the solution to the quadratic equation x2 plus 10x plus 25 equals 7?
Using the quadratic equation formula: x = -5-/+ the square root of 7
Solve this quadratic equation x2 plus 2x - 22 equals 0?
Using the quadratic equation formula:- x = 3.795831523 or x = -5.795831523
How do you solve 0 equals x squared minus ten x plus 16?
Solve using the quadratic formula
What is the answer by using the quadratic formula 2a -46a plus 252 0?
The answer of the equation 2a -46a plus 252 = 0 using the quadratic formula is a = 5.25.
What are the solutions of 2x2 plus 18x-20 equals 0?
Using the quadratic equation formula: x = 1 or x = -10
Solve the following equation using the quadratic formula. -5X2 equals -7X plus 6?
X= (3/5 , -2)
How do you answer 2x² plus 6x minus 8 equals 72?
Using the quadratic equation formula the value of x is -8 or 5
How do you solve x squared minus ten x plus six equals zero?
It can be solved by using the quadratic equation formula.
What is the soultion to x2 plus 10x plus 1 equals -12 plus 2x?
x = - 4 - or + the square root of 3 Solved by using the quadratic equation formula.
