Hey there!
(x - 5)^2
= (x - 5)(x - 5)
= x(x) + x(-5) - 5(x) - 5(-5)
= x(x) - 5(x) - 5(x) - 5(-5)
= x^2 - 5x - 5x + 25
COMBINE the LIKE TERMS
= x^2 - 10x + 25
Therefore, your answer is:
x^2 - 10x + 25
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)