Two mark example problems II — task. Mathematics State Board, Class 8.

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1. Expand \(y^2 - 16\) by using \(a^2 - b^2\) identity.

Answer:

\(y^2 - 16 =\)

(i + i) (i - i)

(Note: Enter the numbers variable followed by the number.)

2. Simplify \((5x + 3)(5x + 4)\) by using \((x + a)(x + b)\) identity.

Answer:

\((5x + 3)(5x + 4) =\)

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

3. Expand \((x + 4)^3\).

Answer:

\((x + 4)^3 =\)

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

(Note: Enter the numbers first followed by the variables.)

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4. Two mark example problems II