Question

write the following in expanded form :
(5x-2y+z)^2​

Answer 1

Answer:

(5x - 2y + z)^2 = 25x^2 +4y^2 + z^2 - 20xy - 4yz + 10xz

Step-by-step explanation:

(5x - 2y + z)^2

(a + b + c)^2 = a^2 + b^2 + c^2 + 2ab + 2bc + 2ca

a = 5x, b = -2y, c = z

(5x - 2y + z)^2 = (5x)^2 + (-2y)^2 + (z)^2 + 2(5x)(-2y) + 2(-2y)(z) + 2(z)(5x)

                        =25x^2 +4y^2 + z^2 - 20xy - 4yz + 10xz