Question

expand (3x+y-2z) square ​

Answer 1

Answer:

We can apply (a +b+c)² = a² + b² c²+ (2ab +2bc +2ac)

so ur answer is :

(3x)² + y² + (2z)² + 2(3x)(y) +2(y)(2z) + 2(3x)(2z)

= 9x² + y² + 4z² + 6xy + 4yz + 12xz

Hope it helps :)

Answer 2

Please check the picture for the answer. Hope it will help you!