3(x+4y)^3 - 2z(X+4y)^2
Answers
Answered by
2
Answer:
answr
search
What would you like to ask?
MATHS
The system x+4y−2z=3,3x+y+5z=7 and 2x+3y+z=5 has:
Share
Study later
VIDEO EXPLANATION
ANSWER
Determinant of coefficient matrix is,
Δ=
∣
∣
∣
∣
∣
∣
∣
∣
1
3
2
4
1
3
−2
5
1
∣
∣
∣
∣
∣
∣
∣
∣
=1(1−15)−3(4+6)+2(20+2)=0
And Δ
x
=
∣
∣
∣
∣
∣
∣
∣
∣
3
7
5
4
1
3
−2
5
1
∣
∣
∣
∣
∣
∣
∣
∣
=3(1−15)−7(4+6)+5(20+2)=−2
=0
Hence no solutions (Use cramer rule )
Similar questions