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Create a quadratic equation and demonstrate how it would be solved by graphing, factoring, the quadratic formula, and by completing the square.

Question

medals & fans rewarded
Create a quadratic equation and demonstrate how it would be solved by graphing, factoring, the quadratic formula, and by completing the square.

ladiesman217 · Answer

@.Sam.  can you help me please

anonymous · Answer

Why is the value of arcsin(sin(5pi/4)) -pi/4 and not 5pi/4? Thank you. :)

compassionate · Answer

-16t^2 + 8(t) + 15

(x - 3)(x - 5) Points (3, 5) graphing. Since 3 is directly correlated to five, plug in the numbers and you'l get. 

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compassionate · Answer

-16t^2 + 8(t) + 15

(x - 3)(x - 5) Points (3, 5) graphing.

The binomial terms are the roots. I can then put it in a function 
y = -16t^2 + 8(t) + 15, substituting -3, 3, which will give me the parabola. 

 To use the quadratic equation: 
$$\frac{ - 8 \pm \sqrt{8^2 - 4(-16)(15)}}{ 2(-16) } $$

Solving the two roots, will give me 3,5. I can also use this formula to maintain the minimum or maximum by using the equation. $$\frac{ -b }{ 2a }$$