The sum of two numbers is 116 and their difference is 18. Find the larger number.
2 answers:
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You don't have a question in there but I can tell you that the quadratic formula that is shown is not quite correct.
<span>x = -b ± √b2 - 4ac 2a
For one thing, the first 3 terms should ALL be divided by 2a
The square root symbol should be extended from b^2 through 4ac
The division symbol is missing.
So the quadratic formula SHOULD read:
x = [-b +- sq root (b^2 - 4ac) ] / 2a
Also I have attached a graphic of the quadratic formula.
</span>
<span>x = -b ± √b2 - 4ac 2a
For one thing, the first 3 terms should ALL be divided by 2a
The square root symbol should be extended from b^2 through 4ac
The division symbol is missing.
So the quadratic formula SHOULD read:
x = [-b +- sq root (b^2 - 4ac) ] / 2a
Also I have attached a graphic of the quadratic formula.
</span>
Answer:
- y = -5
- x = - 2
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The horizontal line has same y- coordinate for each x- coordinate, and is parallel to the x-axis so it is:
- y = - 5
The vertical line has same x- coordinate for each y- coordinate, and is parallel to the y-axis so it is:
- x = - 2
<em>Refer to graphs.</em>
