Question

10. What would be the
denominator after rationalizing
7/(217 - 15)?​

Answer 1

5√3+5√2)

Denominator after rationalizing is 25

Step-by-step explanation:

AS YOU CAN WE HAVE TO RATIONALIZE

SO MULTIPLY WITH

CONJUGATE AND DIVIDE WITH THE SAME NUMBER

HERE THE CONJUGATE IS

5\sqrt{3} +5\sqrt{2}53+52

SO AFTER MULTIPLYING AND DIVIDING WE GET

(5\sqrt{3} )^{2} -(5\sqrt{2})^{2}(53)2−(52)2

WHICH IS ALSO EQUAL TO

5X5X3-5X5X2

75-50

25