x2+15x+56 = (x + 8)(x + 7)
x2-15x+54 = (x - 9)(x - 6)
a2+7a-60 = (a + 12)(a - 5)
x2+8x-180 = (x + 18)(x - 10)
m2-20m-300 = (m - 30)(m + 10)
x2+x-132 = (x + 12)(x - 11)
m2-2m-168 = (m - 14)(m + 12)
c2+24c+135 = (c + 15)(c + 9)
m2-41m+400 = (m - 25)(m - 15)
