Given that one of the roots of the equation $2{{x}^{2}}+(k+2)x+k=0$ is 2. Find the value of k

Expand $(2x-3y)(x-5y)$

Find the equation whose roots are 2 and $-3\tfrac{1}{2}$

Ada draws a graph of $y={{x}^{2}}-x-2$and $y=2x-1$on the same axes. Which of the these equations is she solving 

Adding 42 to a given positive number gives the same result as squaring the number. Find the number.  

Find the equation whose roots are ¾ and –4

What must be added to ${{x}^{2}}-3x$ to make it a perfect square?

Which of the following is a factor of $2-x-{{x}^{2}}$ 

Find the quadratic equation whose roots are – ½ and 3

If c and k are roots of $6-x-{{x}^{2}}=0$, find c + k