Question

rationalise the denominator 7√2/√3+√2​

Answer 1

ANSWER :

Question about

Rationalizing the denominator

7-3√2/7+3√2

Multiply the numerator and denominator by 7-3√2

=(7-3√2)/(7+3√2)×(7-3√2)/(7-3√2)

write the repeated multiplication in exponential form.

(7-3√2)²/49-9×2

using(a-b)²=a²-2ab+b² expand the expressions

49-42√2+18/49-18

Add the numbers.

67-42√2/49-18

=67-42√2/31

EXPLANATION :

HOPE IT WAS HELPFUL

Answer 2

Answer:

7√6-14

Step-by-step explanation:

7√2/√3+√2

=7√2×√3-√2/√3+√2×√3-√2

=7√6-7√4/(√3)²-(√2)². {a-b×a+b=a²-b²}

=7√6-7×2/3-2

=7√6-14