Question

(2x-y+z)²

Please send step by step​

Answer 1

Answer:

write the same two times remove 2

as 2 =2times the given no

take common and add and subtract

the result is the ans

(3x-y+7)(3x-y+7)

3x×3x-(-y×-y)+(7×7)

=9x-2y+49

Answer 2

Step-by-step explanation:

A

2

+B

2

+C

2

=A

2

+B

2

+C

2

+2AB+2BC+2CA

⇒(4x

2

+y

2

+z

2

−4xz−2yz+4xz)