Question

please answer these question ​

Answer 1

this is your answer to the question

Answer 2

Answer:

Step-by-step explanation:

• 1/(a+b+x)=1/a + 1/b + 1/x

• 1/(a+b+x) -1/x = 1/a + 1/b

• x-(a+b+x)/x(a+b+x) = a+b/ ab

• -1(a+b) /x(a+b+x) = a+b/ ab

• -1(a+b)/(a+b) = x(a+b+x)/ab

• -1=x(a+b+x) / ab

• -ab= (a+b)x + x²

so, x² + (a+b)x +ab = 0

now, A = 1, B=(a+b) C= ab..

so, D = B² - 4AC

=(a+b)²- 4ab

= (a-b)²

so, x = (-B ±√D)/2A  

= -a-b+a-b /2*1   and  -a-b-a+b /2*1

 = -2b/2  and -2a /2

so,x = -b or -a .