Two mark exercise problems V — task. Mathematics State Board, Class 8.

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1. Subtract: \(-2(xy)^2(y^3 + 7x^2y + 5)\) from \(5y^2(x^2y^3 - 2x^4y + 10x^2)\).

Answer:

Difference \(=\)

\(7x^2y^5 - 4x^4y^3 + 60x^2y^2\)
\(7x^2y^5 - 4x^4y^3 - 60x^2y^2\)
\(7x^2y^5 + 4x^4y^3 + 60x^2y^2\)
\(7x^2y^5 + 4x^4y^3 - 60x^2y^2\)

2. Multiply \((4x^2 + 9)\) and \((3x - 2)\).

Answer:

Product \(=\)

\(12x^3 - 8x^2 + 27x + 18\)
\(12x^3 - 8x^2 + 27x - 18\)
\(12x^3 - 8x^2 - 27x - 18\)
\(12x^3 + 8x^2 + 27x - 18\)

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