(3+2sqrt(2)^2

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(3+2sqrt(2)^2=?

Guest Jan 6, 2015

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+5

Best Answer

(3+2sqrt(2)^2=?

There is a bracket missing

(3+2sqrt(2))^2

$$\\=3^2+(2\sqrt2)^2+2*3*2\sqrt2\\\\
=9+4*2+12\sqrt2\\\\
=17+12\sqrt2\\\\$$

Melody Jan 7, 2015

Melody · Answer 1 · 2015-01-07T11:38:27

(3+2sqrt(2)^2=?

There is a bracket missing

(3+2sqrt(2))^2

$$\\=3^2+(2\sqrt2)^2+2*3*2\sqrt2\\\\
=9+4*2+12\sqrt2\\\\
=17+12\sqrt2\\\\$$