No products in the cart.

x+y=a+b,ax-by=a²-b² solve for the value of …

CBSE, JEE, NEET, CUET

CBSE, JEE, NEET, CUET

Question Bank, Mock Tests, Exam Papers

NCERT Solutions, Sample Papers, Notes, Videos

x+y=a+b,ax-by=a²-b² solve for the value of x and y by substitution
  • 2 answers

Shobha Kumari 4 years, 8 months ago

Given,eqn =x+y=a+b................ (1) And =ax-by=a2-b2........... (2) From (1)*b+(2) =bx+by=ab+b2 =ax-by =a2-b2 =ax+bx=a2+ab =X(a+b)=a(a+b) =X=a Now,on putting x=a in eqn 1 =x+y=a+b =a+y=a+b =y=a Hence,x=a and y =b

Muskan Sharma 4 years, 8 months ago

Given:- equation x+y= a+b and ax - by= a² - b² Solution:- Let x+y =a+b......(1) and ax - by = a² - b² .......(2) Substitute x from (1) in equation (2) a( a+b-y)- by = a²-b² a²+ab-ay-by =a²-b² ab-ay-by=b² ab-y(a+b)=-b² y(a+b)=ab+b² y(a+b)=b(a+b) y=b Substitute y in equation (1)... x+y= a+b x=a+b-b x=a x=a and y=b .
http://mycbseguide.com/examin8/

Related Questions

Prove that root 8 is an irration number
  • 2 answers
Venu Gopal has twice
  • 0 answers
(A + B )²
  • 1 answers
sin60° cos 30°+ cos60° sin 30°
  • 2 answers
Find the nature of quadratic equation x^2 +x -5 =0
  • 0 answers
X-y=5
  • 1 answers

myCBSEguide App

myCBSEguide

Trusted by 1 Crore+ Students

Test Generator

Test Generator

Create papers online. It's FREE.

CUET Mock Tests

CUET Mock Tests

75,000+ questions to practice only on myCBSEguide app

Download myCBSEguide App