Question 157980
Do you want to factor?


{{{x^2-10x+25-64y^2=(x-5)^2-64y^2=((x-5)+8y)((x-5)-8y)=(x+8y-5)(x-8y-5)}}}



So {{{x^2-10x+25}}} factors to {{{(x+8y-5)(x-8y-5)}}}