Mister Exam

Factor polynomial a^2-49

An expression to simplify:

The solution

You have entered [src]
 2     
a  - 49
$$a^{2} - 49$$
a^2 - 49
Factorization [src]
(a + 7)*(a - 7)
$$\left(a - 7\right) \left(a + 7\right)$$
(a + 7)*(a - 7)
Combinatorics [src]
(-7 + a)*(7 + a)
$$\left(a - 7\right) \left(a + 7\right)$$
(-7 + a)*(7 + a)
Numerical answer [src]
-49.0 + a^2
-49.0 + a^2