Find the product of (3x − 7y)2.

9x2 − 42xy + 49y2

9x2 + 42xy + 49y2

9x2 − 49y2

9x2 + 49y2

Question

Find the product of (3x − 7y)2.

 9x2 − 42xy + 49y2

 9x2 + 42xy + 49y2

 9x2 − 49y2

 9x2 + 49y2

jamierox4ev3r · Answer

is it 2(3x-7y) or (3x-7y)^2<----exponenet

anonymous · Answer

yes @Jamierox4ev3r

ankit042 · Answer

use the formula (a-b)^2=a^2 +b^2-2ab

jamierox4ev3r · Answer

wait but which one lol

jamierox4ev3r · Answer

the first one or the second one?

anonymous · Answer

second one @Jamierox4ev3r

jamierox4ev3r · Answer

oh okay just picture it like this:
(3x-7y)(3x-7y)

jamierox4ev3r · Answer

if you use the property of distribution, you could solve this

jamierox4ev3r · Answer

(3x-7y)(3x-7y)

9x^2-21xy-21xy+49y^2

jamierox4ev3r · Answer

then you combine like terms

jamierox4ev3r · Answer

9x^2+49y^2-42xy

uri · Answer

(a-b)^2=a^2 +b^2-2ab
(3x-7y)^2=(3x)^2+(7y)^2-2(3)(7)
                =9x^2+49x^2-42xy

jamierox4ev3r · Answer

that is your final answer does that make sense @wendyrodriguez0114 ?

anonymous · Answer

some what because you combine right?  @Jamierox4ev3r

anonymous · Answer

thank you  @Jamierox4ev3r

jamierox4ev3r · Answer

no problem pleasure working with you :DD

jamierox4ev3r · Answer

but if you need it to be written by standard form, you would write your answer the way @Uri wrote it.