Question

plsss someone answer this helpppp class 12 matrix

Answer 1

Answer:

Step-by-step explanation:

a) x2-2=7

x2=9

x=+3 or -3

b)-5x=-(x²+6)

x²+5x+6=0

x²+2x+3x+6=0

x(x+2) +3(x+2)=0

(x+3)(x+2)=0

x=-3  or -2

It is like a symetric matrix but the symetrices are negative to each other or opposite signs

c)2y-7=7

2y=14

y=7

x-3=7

x=10

and a scalar matrix has the same number throughout as a diagonal.....

d)x+y-2=0

y-x=0

x+y=2

2y=2

y=1

x=1

And a diagonal matrix is a matrix which has only a diagonal as numbers

I am in 10th btw so plz tell me if i am wrong...........