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Expression simplification/ Factor perfect squares/ x^2+x+4

Factor x^2+x+4 squared

An expression to simplify:

The solution

You have entered [src] 
 2        
x  + x + 4
(x2+x)+4\left(x^{2} + x\right) + 4 
x^2 + x + 4
General simplification [src] 
         2
4 + x + x
x2+x+4x^{2} + x + 4 
4 + x + x^2
Factorization [src] 
/            ____\ /            ____\
|    1   I*\/ 15 | |    1   I*\/ 15 |
|x + - + --------|*|x + - - --------|
\    2      2    / \    2      2    /
(x+(12−15i2))(x+(12+15i2))\left(x + \left(\frac{1}{2} - \frac{\sqrt{15} i}{2}\right)\right) \left(x + \left(\frac{1}{2} + \frac{\sqrt{15} i}{2}\right)\right) 
(x + 1/2 + i*sqrt(15)/2)*(x + 1/2 - i*sqrt(15)/2)
The perfect square
Let's highlight the perfect square of the square three-member
(x2+x)+4\left(x^{2} + x\right) + 4
To do this, let's use the formula
ax2+bx+c=a(m+x)2+na x^{2} + b x + c = a \left(m + x\right)^{2} + n
where
m=b2am = \frac{b}{2 a}
n=4ac−b24an = \frac{4 a c - b^{2}}{4 a}
In this case
a=1a = 1
b=1b = 1
c=4c = 4
Then
m=12m = \frac{1}{2}
n=154n = \frac{15}{4}
So,
(x+12)2+154\left(x + \frac{1}{2}\right)^{2} + \frac{15}{4}
Numerical answer [src] 
4.0 + x + x^2
4.0 + x + x^2
Combining rational expressions [src] 
4 + x*(1 + x)
x(x+1)+4x \left(x + 1\right) + 4 
4 + x*(1 + x)
Assemble expression [src] 
         2
4 + x + x
x2+x+4x^{2} + x + 4 
4 + x + x^2
Combinatorics [src] 
         2
4 + x + x
x2+x+4x^{2} + x + 4 
4 + x + x^2
Common denominator [src] 
         2
4 + x + x
x2+x+4x^{2} + x + 4 
4 + x + x^2
Trigonometric part [src] 
         2
4 + x + x
x2+x+4x^{2} + x + 4 
4 + x + x^2
Powers [src] 
         2
4 + x + x
x2+x+4x^{2} + x + 4 
4 + x + x^2
Rational denominator [src] 
         2
4 + x + x
x2+x+4x^{2} + x + 4 
4 + x + x^2
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