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Example Solve 3x2 - 2 x -11 = 0.
Solution
In this case the polynomial doesn't factor thus we can't do that step. Though, still we do have to know where the polynomial is zero. We ought to use the quadratic formula for that. Here is what the quadratic formula gives us.
x = (1 ± √ 34)/3
In order to work the problem we'll have to reduce this to decimals.
x = (1 +√34)/3 = 2.27698 x = (1 -√34) /3 = -1.61032
From this instance on the procedure is identical to the earlier examples. In the number line below the dashed lines are at the estimated values of the two decimals above & the inequalities illustrate the value of the quadratic evaluated at the test points illustrated.
Thus, it looks like we required the two outer regions for the solution. Here is the inequality & interval notation for the solution.
-∞ < x < (1 - √34 )/3 and ( 1 + √34 )/3 -∞, (1- √ 34) /3 and ( 1 +√34 /3, , ∞ )
-∞, (1- √ 34) /3 and ( 1 +√34 /3, , ∞ )
Multiply 2(b + 5)
my son is in middle school and his teacher pre-algebra teacher wants him to write a summary on "who I am " about his self. summary about myself. I need your to know do have a any
39+(-88)-29-(-83)
9x^4-x^2-12x-36
General problems for homework
#question square root of 14 ..
how to find the eliminate of 4x+2y=2 and x-5y=-16?
(4y2)(2y)
In this section we will discussed at solving exponential equations There are two way for solving exponential equations. One way is fairly simple, however requires a very specia
A store sells cashews for $3.00 per pound and pecans for $8.00 per pound. How many pounds of cashews and how many pounds of pecans should you mix to make a 50-lb mixture costing $4
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