Question

$\sqrt{8} + \sqrt{5} = a and \sqrt{8} - \sqrt{5} = bthen {a + b?}^2 +( a - b)square$
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Answer 1

Answer:

(a+b)²=32

(a-b)²=20

Step-by-step explanation:

√8+√5=a

and

√8-√5=b

thus,

(a-b)²=(√8+√5-√8+√5)²

=20

(a+b)²=(√8+√5+√8-√5)²

=32