Tiger Algebra Calculator
Solution -
Step by Step Solution
Step by step solution :
Step 1 :
Equation at the end of step 1 :
((5•72•11x2) + 5834x) - 92273 = 0
Step 2 :
Trying to factor by splitting the middle term
2.1 Factoring 2695x2+5834x-92273
The first term is, 2695x2 its coefficient is 2695 .
The middle term is, +5834x its coefficient is 5834 .
The last term, "the constant", is -92273
Step-1 : Multiply the coefficient of the first term by the constant 2695 • -92273 = -248675735
Step-2 : Find two factors of -248675735 whose sum equals the coefficient of the middle term, which is 5834 .
Numbers too big. Method shall not be applied
Equation at the end of step 2 :
2695x2 + 5834x - 92273 = 0
Step 3 :
Parabola, Finding the Vertex :
3.1 Find the Vertex of y = 2695x2+5834x-92273
Parabolas have a highest or a lowest point called the Vertex . Our parabola opens up and accordingly has a lowest point (AKA absolute minimum) . We know this even before plotting "y" because the coefficient of the first term, 2695 , is positive (greater than zero).
Each parabola has a vertical line of symmetry that passes through its vertex. Because of this symmetry, the line of symmetry would, for example, pass through the midpoint of the two x -intercepts (roots or solutions) of the parabola. That is, if the parabola has indeed two real solutions.
Parabolas can model many real life situations, such as the height above ground, of an object thrown upward, after some period of time. The vertex of the parabola can provide us with information, such as the maximum height that object, thrown upwards, can reach. For this reason we want to be able to find the coordinates of the vertex.
For any parabola,Ax2+Bx+C,the x -coordinate of the vertex is given by -B/(2A) . In our case the x coordinate is -1.0824
Plugging into the parabola formula -1.0824 for x we can calculate the y -coordinate :
y = 2695.0 * -1.08 * -1.08 + 5834.0 * -1.08 - 92273.0
or y = -95430.287
Parabola, Graphing Vertex and X-Intercepts :
Root plot for : y = 2695x2+5834x-92273
Axis of Symmetry (dashed) {x}={-1.08}
Vertex at {x,y} = {-1.08,-95430.29}
x -Intercepts (Roots) :
Root 1 at {x,y} = {-7.03, 0.00}
Root 2 at {x,y} = { 4.87, 0.00}
Solve Quadratic Equation using the Quadratic Formula
3.2 Solving 2695x2+5834x-92273 = 0 by the Quadratic Formula .
According to the Quadratic Formula, x , the solution for Ax2+Bx+C = 0 , where A, B and C are numbers, often called coefficients, is given by :
- B ± √ B2-4AC
x = ————————
2A
In our case:
A = 2695.00
B = 5834.00
C = -92273.00
B2 = 34035556.00
4AC = -994702940.00
B2 - 4AC = 1028738496.00
SQRT(B2-4AC) = 32073.95
x=( -5834.00 ± 32073.95) / 5390.00
x = 4.86827
x = -7.03302
Two solutions were found :
- x = -7.03302
- x = 4.86827
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