Mister Exam

Other calculators

Expression simplification/ Factor perfect squares/ x^2+x+3

Factor x^2+x+3 squared

An expression to simplify:

The solution

You have entered [src] 
 2        
x  + x + 3
$$\left(x^{2} + x\right) + 3$$ 
x^2 + x + 3
General simplification [src] 
         2
3 + x + x
$$x^{2} + x + 3$$ 
3 + x + x^2
The perfect square
Let's highlight the perfect square of the square three-member
$$\left(x^{2} + x\right) + 3$$
To do this, let's use the formula
$$a x^{2} + b x + c = a \left(m + x\right)^{2} + n$$
where
$$m = \frac{b}{2 a}$$
$$n = \frac{4 a c - b^{2}}{4 a}$$
In this case
$$a = 1$$
$$b = 1$$
$$c = 3$$
Then
$$m = \frac{1}{2}$$
$$n = \frac{11}{4}$$
So,
$$\left(x + \frac{1}{2}\right)^{2} + \frac{11}{4}$$
Factorization [src] 
/            ____\ /            ____\
|    1   I*\/ 11 | |    1   I*\/ 11 |
|x + - + --------|*|x + - - --------|
\    2      2    / \    2      2    /
$$\left(x + \left(\frac{1}{2} - \frac{\sqrt{11} i}{2}\right)\right) \left(x + \left(\frac{1}{2} + \frac{\sqrt{11} i}{2}\right)\right)$$ 
(x + 1/2 + i*sqrt(11)/2)*(x + 1/2 - i*sqrt(11)/2)
Assemble expression [src] 
         2
3 + x + x
$$x^{2} + x + 3$$ 
3 + x + x^2
Trigonometric part [src] 
         2
3 + x + x
$$x^{2} + x + 3$$ 
3 + x + x^2
Rational denominator [src] 
         2
3 + x + x
$$x^{2} + x + 3$$ 
3 + x + x^2
Powers [src] 
         2
3 + x + x
$$x^{2} + x + 3$$ 
3 + x + x^2
Numerical answer [src] 
3.0 + x + x^2
3.0 + x + x^2
Common denominator [src] 
         2
3 + x + x
$$x^{2} + x + 3$$ 
3 + x + x^2
Combinatorics [src] 
         2
3 + x + x
$$x^{2} + x + 3$$ 
3 + x + x^2
Combining rational expressions [src] 
3 + x*(1 + x)
$$x \left(x + 1\right) + 3$$ 
3 + x*(1 + x)
    © Mister Exam – Calculator