Question

2. x + y + z = 9 2r + 5y + 72 = 52 2x + y - z=0 in Cramer's rule , Jordan method and matrix inversion
plz help​

Answer 1

Answer:

X=

⎣

⎢

⎢

⎡

x

y

z

⎦

⎥

⎥

⎤

B=

⎣

⎢

⎢

⎡

9

52

0

⎦

⎥

⎥

⎤

A=

⎣

⎢

⎢

⎡

1

2

2

1

5

1

1

7

−1

⎦

⎥

⎥

⎤

⇒A

−1

=

⎣

⎢

⎢

⎡

3

−4

2

−

2

1

4

3

−

4

1

−

2

1

4

5

−

4

3

⎦

⎥

⎥

⎤

X=A

−1

B

⎣

⎢

⎢

⎡

x

y

z

⎦

⎥

⎥

⎤

=

⎣

⎢

⎢

⎡

3

−4

2

−

2

1

4

3

−

4

1

−

2

1

4

5

−

4

3

⎦

⎥

⎥

⎤

⎣

⎢

⎢

⎡

9

52

0

⎦

⎥

⎥

⎤

⎣

⎢

⎢

⎡

x

y

z

⎦

⎥

⎥

⎤

=

⎣

⎢

⎢

⎡

1

3

5

⎦

⎥

⎥

⎤

∴x=1,y=3,z=5

please mark me Brenest answer