Mathematics
Mathematics, 21.05.2020 23:19, kyrarix

Chad was asked whether the following equation is an identity:
(3x + 2y)^2= (3x + 2y)(3x – 2y) + 2(2y)^2 ?
He performed the following steps:
(3x + 2y)
Step 1
= 922 + 4y
Step 2
9r? – 4y + 4y? – 4y
Step 3
(9x² – 44²) + 8y²

answer
Answers: 1

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Do you know the correct answer?
Chad was asked whether the following equation is an identity:
(3x + 2y)^2= (3x + 2y)(3x – 2y)...

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