Question

simplify (2√5+3√7)^2

Answer 1

\[(2\sqrt{5}+3\sqrt{7})(2\sqrt{5}+3\sqrt{7})\]

Answer 2

how did you get that?

Answer 3

no I meant like what are the steps

Answer 4

@AldousJames dude he's not allowed to use calculators to find square roots of numbers

Answer 5

\[(2\sqrt{5}+3\sqrt{7})(2\sqrt{5}+3\sqrt{7})\]
\[2\sqrt{5}\times 2\sqrt{5}+2\times 2\sqrt{5}\times 3\sqrt{7}\times 3\sqrt{7}\times 3\sqrt{7}\]

Answer 6

\[=4\times5+12\sqrt{35}+9\times 7\]
\[=20+12\sqrt{35}+63\]
\[=83+12\sqrt{35}\]

Answer 7

83+ 12^0.5

Answer 8

four multiplications just like \((a+b)^2=a^2+2ab+b^2\)

Answer 9

The task was to simplify so and not to calculate so I guess using a calculator would be quite wrong. satellite73 did it right.