Question

Caranya yg lengkap
1).(x-y)²-(p+q)²

Answer 1

(x-y)(x-y) - (p+q)(p+q) = x^2-2xy+y^2 - p^2+2pq+q^2

Answer 2

1.  (x-y)²-(p+q)²
= ( x² + 2 (x) (-y) + (-y)² )  -  (p² + 2 (p) (q) + q² )
= x² - 2xy +y² - p² - 2pq - q²