Find the value of `7-:0 and 0-:7`.

7.Find the value of

If [[(x+3y),y],[7-x,4]]=[(4,-1),(0,1)], find the values of x and y.

Find the value of the 7^(4)

Find the value of x and y from 7x-15y-2=0 x+2y-3=0

Find the value of x and y from 7x-15y-2=0 x+2y-3=0

Find the value of the (-1)^(7)

Find the values of x and y from each of the following matrix equation : (i) [{:(x+y),(x-y):}]=[(3)/(1)](ii) [{:(x+y,7),(0,2x):}]=[{:(-1,7),(0,6):}]

If a is a root of x^(2) - 3x-5=0 find the value of a^(4) - 2a^(3) - 7a^(2) -8a

If sqrt(784) = 28 , find the value of : (i) sqrt(7.84) + sqrt(78400) (ii) sqrt(0.0784) + sqrt(0.000784)

Find the value of the (7)^(3)