can someone check my answer- transformations

[sage spruce]

Transformations question, my answer and working out is quite different from the question answer I've got, so I don't know if its fully correct. And in this can someone explain why they took out the 9? aren't u supposed to leave everything under the ^2 since its the same as the starting?
My answer is the blue one, the red is textbook ans
Thanks!

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[sage spruce]

can someone check my answer- transformations

[radiant juniper]

Both are correct.

[slender bough]

An easy way to check is to expand both equations and see if they match.

[sage spruce]

Thanks

[sage spruce]

I’ll do that thanks

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