chloejubilee310 chloejubilee310

23-10-2018
Mathematics

contestada

Find the product of (3x+7y)^2
A) 9x^2 - 42xy + 49y^2
B) 9x^2 - 49y^2
C) 9x^2 + 49y^2
D) 9x^2+42xy+49y^2

Respuesta :

trevordoyleione trevordoyleione

24-10-2018

(3x+7y)² the form is ax² + 2ab + b² where a is 3x and B is 7y

so its

(3x)² + 1(3x)(7y) + (7y)²

9x² + 21xy + 49y²

Answer Link

JackieChan914 JackieChan914

07-02-2019

Answer:

9x^2 − 42xy + 49y^2

Step-by-step explanation:

Answer Link

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