Question

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What is the following product?
Question is 1st imgae, Answers is 2nd

Answer 1

`\big(4x√(5x^2)+2x^2√(6)\big)^2=\big(4x√(5x^2)\big)^2+\big(2x^2√(6)\big)^2+2\cdot4x√(5x^2)\cdot2x^2√(6)=\\\\\\=16x^2\cdot5x^2+4x^4\cdot6+16x^3√(x^2)√(30)=80x^4+24x^4+16x^4√(30)=\\\\\\=\boxed{104x^4+16x^4√(30)}`

Answer D.