Examples with solutions for Square of sum: Using fractions

Exercise #1

Consider the following relationship between x and y:

1+yx+x4y=0 1+\frac{y}{x}+\frac{x}{4y}=0

Express the equation in the form of a reduced multiplication formula.

Video Solution

Answer

(x+2y)2=0 (x+2y)^2=0

Exercise #2

(1x+x)2= (\frac{1}{x}+x)^2=

Video Solution

Answer

x4+2x2+1x2 \frac{x^4+2x^2+1}{x^2}

Exercise #3

AX+BX2=(2X+3)2XC \frac{A}{X}+\frac{BX}{2}=\frac{(2X+3)^2}{X}-C

Calculate the values of A, B, and C so that the equation is satisfied.

Video Solution

Answer

A=9,B=8,C=12 A=9,B=8,C=12

Exercise #4

x2+y2(xy)2=3,(xy)2=1 \frac{x^2+y^2}{(x-y)^2}=3,(x-y)^2=1

What is the product of x and y?

Video Solution

Answer

xy=1 xy=1

Exercise #5

(1x+12)2(1x+13)2=8164 \frac{(\frac{1}{x}+\frac{1}{2})^2}{(\frac{1}{x}+\frac{1}{3})^2}=\frac{81}{64}

Find X

Video Solution

Answer

x=1,177 x=1,-\frac{17}{7}

Exercise #6

(x+y)2=1,x2+y2(x+y)2=3 (x+y)^2=1,\frac{x^2+y^2}{(x+y)^2}=3

Calculate the product of x and y.

Video Solution

Answer

xy=1 xy=-1

Exercise #7

Solve the following equation:

x3+1(x+1)2=x \frac{x^3+1}{(x+1)^2}=x

Video Solution

Answer

x=12 x=\frac{1}{2}