Question

Simplify (5c+3d)³-(5c-3d)³

Answer 1

(5c+3d)³-(5c-3d)³

= (5c)³+ 3.(5c)².3d+ 3×5c.(3d)²+(3d)³ -{ (5c)³-3.(5c)².3d+ 3×5c.(3d)²-(3d)³}

=(5c)³+ 3.(5c)².3d+ 3×5c.(3d)²+(3d)³-(5c)³+ 3.(5c)².3d- 3×5c.(3d)²+(3d)³

= 450c²d+54d³

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Answer 2

Answer:

hey

here your answer

we use this formulas:-

1) (a^3-b^3)=(a-b) (a^2+ab+b^2)

2) (a^2-b^2)=(a-b) (a+b)