maths

posted by .

rationalise 5+2square root 5 divided by square root 5.
please can someone help me on how to get the answer 2+square root 5

  • maths -

    (5+2√5)/√5
    multiply top and bottom by √5

    √5(5+2√5)/(√5√5)
    =(5√5 + 10)/5
    = 5(√5+2)/5
    = √5 + 2

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    Use the quadratic formula to solve the equation. Give exact answers: 2x^2 -1 = 6x. The choices are: a) -3 + square root(7)/2, -3 - square root(7)/2 b) 3 + square root(11)/2, 3 - square root(11)/2 c) 3 + square root(7)/2, 3 - square …
  2. Math

    Rationalize the denominator. Assume that all expressions under radicals represent positive numbers. The square root of 3y^4 to the third root divided by the square root of 15x^4 to the third root. Here is what I have so far: I multiplied. …
  3. maths

    rationalise 5+2square root 5 divided by square root 5. please can someone help me on how to get the answer 2+square root 5
  4. maths

    rationalise 5+2square root 5 divided by square root 5. please can someone help me on how to get the answer 2+square root 5
  5. Algebra

    Rationalize each expression by building perfect nth root factors for each denominator. Assume all variables represent positive quantities. I don’t understand how to compute these. Also I don’t have the square root sign so I typed …
  6. Math simplifying mixed radicals

    Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root: 2 square root 48 3 square root 81 6 square root 12 …
  7. Math simplifying mixed radicals

    Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root and the numbers infront of the square root are supposed …
  8. Math ~CHECK MY ANSWER~

    1) Which of these is a rational number? a. Pi b. Square root 3 ****** c. Square root 2 d. 1.3 (the # 3 has a line at the top) 2) Which of the following sets contains 3 irrational numbers?
  9. Calculus

    A rectangle is bounded by the x axis and the semicircle = square root 25-x^2. What length and width should the rectangle have so that its area is a maximum?
  10. Pre- Algebra

    State if each number is Rational,Irrational,or not a real number?

More Similar Questions