a−5a-5a−5^2+2*5x−125x-125x−12
a−5a-5a−5a−5a-5a−5 + 10x - 24
a^2 - 10a + 25 + 10x - 24
a^2 - 10a + 10x + 1
a−5a-5a−5^2+2*5x−125x-125x−12
a−5a-5a−5a−5a-5a−5 + 10x - 24
a^2 - 10a + 25 + 10x - 24
a^2 - 10a + 10x + 1