Which of the following is a solution of x^2 + 2x + 4?

Step-by-step explanation:

Second-Degree Equation

The second-degree equation or quadratic equation has the general form

where a is non-zero.

There are many methods to solve the equation, one of the most-used is by using the solver formula:

The equation of the question has the values: a=1, b=2, c=4, thus the values of x are

Since the square root has a negative argument, both solutions for x are imaginary or complex. Simplifying the radical

The solutions are

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

11

step-by-step explanation:

32.50-7.50=25

225/25=11