SOLUTION: I have solved many algebric questions but i faced problems in simplyfing the answar having sqrt_to match with books answer. Kindly simplyfy it my ans 49/(7-sqrt42) The book ans

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Question 935160: I have solved many algebric questions but i faced problems in simplyfing the answar having sqrt_to match with books answer. Kindly simplyfy it my ans
49/(7-sqrt42)
The book ans is
7(7+sqrt42)
Found 3 solutions by josgarithmetic, vicgonzerx, MathTherapy:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!


Multiply by 1 in the form of , and simplify from that result.
Answer by vicgonzerx(31)   (Show Source): You can put this solution on YOUR website!
JUST RATIONALIZE UR ANSWER
[49/(7-SQRT42)]
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

I have solved many algebric questions but i faced problems in simplyfing the answar having sqrt_to match with books answer. Kindly simplyfy it my ans
49/(7-sqrt42)
The book ans is
7(7+sqrt42)




 ------- Rationalizing denominator

 ------------ FOILing denominator



________ 

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