Question

35. One of the factors of x2 + y2 + 2xy - z²+ is
(a) (r - y+z)
(b) (x + y - z)
(c)(-x-y+z) (d) (x + y - z)​

Answer 1

Answer:

(x + y - z)

Step-by-step explanation:

x² + y² + 2xy - z²

= (x + y)² -(z)²

= (x + y + z)(x + y - z)