maths help me urgently!!!!!!

rationalise [1-(2i^2)]/i
Plz help show we working so that i can learn

  1. 👍 0
  2. 👎 0
  3. 👁 53
asked by david
  1. i^2 = -1
    1 - 2(-1) = 3
    so this is
    multiply top and bottom by i
    3 i/-1

    1. 👍 0
    2. 👎 0
    posted by Damon

Respond to this Question

First Name

Your Response

Similar Questions

  1. calculus help

    integrate cos^10xdx.. .plz show working i really wanna learn these thanks anyway

    asked by newton on April 17, 2016
  2. maths

    plz help me to find quickly with al steps 5+2^3/7+4^3 rationalise denominator

    asked by daahin on April 24, 2014
  3. math

    Big Question: To rationalize a fraction means to remove all non-rational numbers from the denominator of the fraction. Rationalise (a^2)/(3+√b^3) by multiplying the numerator and denominator by 3 − √b^3, and then evaluate

    asked by Anonymous on November 24, 2017
  4. calculus plz help me

    Show that the numerical value of the radius of curvature at the point (x1, y1) on the parabola y^2=4ax is [2(a+x1)^3/2)]/a^1/2. If c is the centre of the curvature at the origin O and S is the point (a, 0), show that OC=2(OS) plz

    asked by marvin on September 16, 2016
  5. Child development

    Compared to adults, when children perform complex tasks they a.use less working memory. b.are likely to perform fewer processes automatically. c.are unlikely to exceed the capacity of their working memory. d.use more sensory

    asked by Woody on October 9, 2015
  6. Function plz help!!!

    If a function u(x,y)=arctan(y/x) deduce the laplace equation of the function. plz show working i don't no where to start from...plz thanks

    asked by Collins on December 12, 2015
  7. trigonomentry help!!!

    if one of the root of the equation ax^2+bx+c=0 is four times the other show that 4b^2-25ac=0... help please show working plz

    asked by Philip on April 3, 2016
  8. Maths-equation

    (x+y)+(y+z)=5(x+y)(y+z) (x+z)+(y+z)=7(x+z)(y+z) (x+y)+(x+z)=6(z+x)(x+y) plz can at least see the working and learn am studying maths on my own sir steve told me that x=5/24 y=7/24 z=1/24 but i don,t know how he got my paper is

    asked by philip!!! on April 14, 2016
  9. calculus too hard help

    if y=x^x^x^x... dy/dx=? plz show working thanks got no ideal at all

    asked by sam on May 2, 2016
  10. maths need help

    150sinx=x+69.98 find x plz show me working

    asked by ramsey on September 28, 2016

More Similar Questions