find the rational numbers A and B 2 + 5 root 7 by 2 minus 5 root 7 is equal to a + root 7 b
Answers
Answered by
2
Answer:
Step-by-step explanation:
a+√7b=(2+5√7)/(2-5√7)
or, a+√7b=(2+5√7)(2+5√7)/(2-5√7)(2+5√7)
or, a+√7b={2²+2.2.5√7+(5√7)²}/{(2)²-(5√7)²}
or, a+√7b=(4+20√7+175)/(4-175)
or, a+√7b=(179+20√7)/(-171)
or, a+√7b=-179/171+(-20√7/171)
Equating both sides,
a=-179/171 and b=-20/171
QUEEN120806:
mark brainliest plz
Similar questions
Science,
6 months ago
Accountancy,
6 months ago
Math,
11 months ago
Science,
1 year ago
Science,
1 year ago