Question

Write a quadratic eqation whose roots are the solutions of 2x + y = 7 and x-y=2
​

Answer 1

Step-by-step explanation:

2x+y=7,x-y=2

by substitution method

2x+y=7

y=7-2x. (i)

by substituting in second equation

x-y=2

x-(7-2x)=2

x-7+2x=2

3x=9

x=3

y=7-2x

y=7-2(3)

y=1