Simplify the following:- `w+[x-(y+z)]+5-[3-(x-2)]`

Simplify each of the following: 2x-{5y-(x-2y)} 2x-[3y-{2x-(y-x)}]

Simplify the following : 2x^(2)+3y^(2)-5xy+5x^(2)-y^(2)+6xy-3x^(2)

Simplify each of the following: m-[m+{m+n-2m-(m-2n)}-n] 3x^2z-4y z+3x y-{x^2z-(x^2z-3y z)-4y z-7z}

Assuming that x,y,z are positive real numbers,simplify each of the following: (sqrt(x^(-3)))^(5) (ii) sqrt(x^(3)y^(-2))( iii) (x^(-(2)/(3))y^(-(1)/(2)))^(2)

Assuming that x,y,z are positive real numbers,simplify each of the following: (sqrt(x^(-3)))^(5) (ii) (sqrt(x))^(-(2)/(3))sqrt(y^(4))-:sqrt(xy^(-(1)/(2)))

Add the following: (i) x – 3y – 2z , 5x + 7y – 8z , 3x – 2y + 5z

Simplify each of the following algebraic expressions by removing grouping symbols. 20-[5x y+3{x^2-(x y-y)-(x-y)}] 85-[12 x-7(8x-3)-2{10 x-5(2-4x)}] x y[y z-z x-{y x-(3y-x z)-(x y-z y)}]

Find the values of x, y and z from the following equations: (i) [4 3x5]=[y z1 5] (ii) [x+y3 5+z x y]=[6 2 5 8] (iii) [x+y+z x+z y+z]=[9 5 7]

Simplify each of the following algebraic expressions by removing grouping symbols. 2x+(5x-3y) 2. 3x-(y-2x)