if √18-6√5=√a-√b then prove that a+b=18
Answers
Answered by
5
√18 - 6√5 = √a - √b given
Squaring both sides,
18 + 36*5 - 2* 6 *√90 = a + b - 2 √(ab)
Compare the rational and irrational parts on both sides:
a+b = 18 and ab = 36 * 90
Squaring both sides,
18 + 36*5 - 2* 6 *√90 = a + b - 2 √(ab)
Compare the rational and irrational parts on both sides:
a+b = 18 and ab = 36 * 90
kvnmurty:
clik on thanks. select best ans.
Similar questions