7+√2
7+7√2
1−7√2
1+√2
Correct answer is D
1+√83−√2
Rationalizing by multiplying through with 3+√2,
(1+√83−√2)(3+√23+√2)=3+√2+3√8+49−2
= 3+√2+3√4×2+47
= 7+7√27=1+√2
The 3rd and 7th term of a Geometric Progression (GP) are 81 and 16. Find the 5th term. ...
Given that 8x+mx2−3x−4≡5x+1+3x−4...
If (x+2) and (3x−1) are factors of 6x3+x2−19x+6, find the third factor....
If the polynomial f(x)=3x3−2x2+7x+5 is divided by (x - 1), find the remainder....
The sum and product of the roots of a quadratic equation are 47 and 57 res...
Find the derivative of 3√(3x3+1 with respect to x....
Two forces (2i - 5j)N and (-3i + 4j)N act on a body of mass 5kg. Find in ms−2, the magnitude ...
How many ways can 12 people be divided into three groups of 2, 7 and 3 in that order? ...