exam Maths Puzzle Numerical Ability

Please help me find the answer by multiplying using the vertical method.

(2r - 3s)(4r^2 + 6rs + 9s^2)

Thank you for taking the time to help me.

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exam Other Question

Angles A and B are complementary angles. Determine the measures of Angle A and B if angle A is four times the size of angle B. andy is 6 years older than tom. the sum of thier ages is 26. how old are they?