Expand the expression — task. Maths CBSE Live product, Class 8.

Expand the expression

{(3 x - 10 y)}^{2}

using the appropriate identity.

Answer:

The identity used is

{(a - b)}^{2} = i^{i} - i i i + i^{i}

The expansion of

{(3 x - 10 y)}^{2}

i i^{i} - i i i + i i^{i}

[Note: Enter the variable, coefficient, and constant in separate answer field.]

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2. Expand the expression