Question

Simplify (2√5+3√7)^2. show your work, justify each step

Answer 1

\[\left( 2\sqrt{5}+3\sqrt{7} \right)^{2}=\]
multiply out\[=(2\sqrt{5})^{2}+2(2\sqrt{5})(3\sqrt{7})+(3\sqrt{7})^{2}=\]

Answer 2

thank you u r awesome!!!

Answer 3

you're welcome.

Answer 4

You do know you can simplify further? For example, \[(2\sqrt{5})^{2}=4 (\sqrt{5})^{2}=4 \times 5 = 20\]

Answer 5

I think i have it now

Answer 6

great!