Question

what is the number of solution possible for the given pair of linear equations. equations ae 3x-5y=3 and 12x-20y=4

Answer 1

Answer:

GIven : (3x−5y+4)(9x

2

+25y

2

+15xy−20y+12x+16)

The given expression can be written as

93x+(−5y)+4)((3x)

2

+(−5y)

2

−3x×(−5y)−(−5y)×4−4×3x+4

2

)

According to the question,

a

3

+b

3

+c

3

−3abc=9a+b+c)(a

2

+b

2

+c

2

−ab−bc−ca)

We get,

=(3x)

3

+(−5y)

3

+4

3

−3×3x×(−5y)×4

(3x−5y+4)(9x

2

+25y

2

+15xy−20y+12x+16)=27x

3

−125y

3

+64+180xy