Question

simplify the following
a=(8+√5)(8-√5)
​

Answer 1

Solution:-

$→\;{\sf{(8+\sqrt{5})(8-\sqrt{5})}}$

• (a+b)(a-b) = a²-b²

$→\;{\sf{(8)²-(\sqrt{5})²}}$

$→\;{\sf{64-5}}$

$→\;{\bf{59}}$

☞ Value of a = 59

$\Large{✓}$

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