Question

expand and simplify (√3+√7)^2.
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Answer 1

Answer:

2(5+√21)

Step-by-step explanation:

(√3)^2+(√7)^2+2×√3×√7

3+7+2√21

10+2√21

2(5+√21)

Answer 2

Step-by-step explanation:

$\left(\sqrt{3}+\sqrt{7}\right)^2$

$=\left(\sqrt{3}\right)^2+2\sqrt{3}\sqrt{7}+\left(\sqrt{7}\right)^2$

$=3+2\sqrt{21}+7$

$=10+2\sqrt{21}$

Answer:

$10+2\sqrt{21}$