Mister Exam
Factor polynomial z^2-0.49
The solution
Factorization
[src]
(x + 7/10)*(x - 7/10)
$$\left(x - \frac{7}{10}\right) \left(x + \frac{7}{10}\right)$$
(x + 7/10)*(x - 7/10)
Rational denominator
[src]
2
-49 + 100*z
------------
100
$$\frac{100 z^{2} - 49}{100}$$
(-49 + 100*z^2)/100
Combinatorics
[src]
(-7 + 10*z)*(7 + 10*z)
----------------------
100
$$\frac{\left(10 z - 7\right) \left(10 z + 7\right)}{100}$$
(-7 + 10*z)*(7 + 10*z)/100
Combining rational expressions
[src]
2
-49 + 100*z
------------
100
$$\frac{100 z^{2} - 49}{100}$$
(-49 + 100*z^2)/100