4 root 3 + 5 root 2 / root 48 - root 18
Answers
answer is in an image
Answer:
4 + 35√6
--------
21
Step-by-step explanation:
4√3 + 5√2 4√3 + 5√2
---------------- = --------------------
√48 - √18 √4×12 - √9×2
= 4√3 + 5√2
--------------------
2√12 - 3√2
4√3 + 5√2 4√3 + 5√2
= ------------------- = ------------------
2√4×3 - 3√2 4√3 - 3√3
Conjucating,
4√3 + 5√2 (4√3 + 3√3)
= ----------------- × ---------------------
(4√3 - 3√3) (4√3 + 3√3)
4√3 + 5√2 (4√3 + 3√3)
= ----------------------------------- (Using (a+b)(a-b) = a²-b²)
[4√3]² - [3√3]²
16×3 + 12×3 + 20√6 + 15√6
= ----------------------------------------
16×3 - 9×3
48 + 36 + 35√6
= -----------------------
48 - 27
84 + 35√6
= ------------------
21
= 4 + 35√6
----------
21