Question

Factorise : 27y3 + 125 z3​

Answer 1

Step-by-step explanation:

solution.............

Answer 2

Answer:

Step-by-step explanation:

27y^3 + 125z^3

ie [3y]^3 + [5z]^3

we know the formula

x3+y3 = [x+y][x^2-xy+y3}

so,

  [3y]^3 + [5z]^3 = [3y+5z] {[3y]^2-3y x 5z + [5z}^2}

                          = [3y+5z] [9y^2-15yz+25z^2]

 therefore, [3y]^3 +[5z]^3 = [3y+5z] [9y^2-15yz+25z^2]