Question

apron
expand (3x-5y+2z)2​

Answer 1

Answer:

(3x+5y+2z)(3x−5y+2z)

=(3x+2z+5y)(3x+2z−5y)

=(3x+2z)

2

−(5y)

2

...[Using a

2

−b

2

=(a+b)(a−b)]

=((3x)

2

+2(3x)(2z)+(2z)

2

)−25y

2

....[Using (a+b)

2

=a

2

+2ab+b

2

]

=9x

2

+12xz+4z

2

−25y

2