I really need help please help me

2.82

Step-by-step explanation:

I tried my best so im sorry if it isnt correct

x4-5x2-24=0

(x2+3) (x2-8)=0

x2 +3=0

x= 2.82

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

hi! i think the answer is 1/2 : )