Question

expand the following:(√3x-1/5y)^2​

Answer 1

Answer:

After applying an algebric identity,

(a + b) ² = a² + b² + 2ab,

\begin{gathered}\: \: \: {(5y - 3x)}^{2} \\ = {(5y)}^{2} + {( - 3x)}^{2} + 2(5y)( - 3x) \\ = 25 {y}^{2} + {9x}^{2} - 30xy.\end{gathered}

(5y−3x)

2

=(5y)

2

+(−3x)

2

+2(5y)(−3x)

=25y

2

+9x

2

−30xy.

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