bobbyknight4430 bobbyknight4430

09-10-2018
Mathematics

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Question 9 Unsaved For all x, (2x+3)^2=? Question 9 options: 4x^2+9 4x^2+6x+9 4x^2+6 4x^2+12x+9

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suly0281 suly0281

09-10-2018

It's 4x^2+12x+9 because (2x+3)^2 Is just another way of writing

(2x+3)(2x+3) and all you do is distribute which gives you 4x^2+6x+6x+9 which can be simplified into 4x^2+12x+9.

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