Question

7
Find the value of 'a' and 'b' if
= a + bv2.
5-v2​

Answer 1

Answer:

ans is 4.

Step-by-step explanation:

$a + b \sqrt{2} = 5 - \sqrt{2} \\ so \: we \: can \: see \: \: by \: comparing \: the \: values \: of \: a \: and \: b \: \: \\ we \: got \: a = 5 \\ b = - 1$

so a + b = 5+ (-1) = 4