Simplify

  1. (a)

    3x2×4y53x^2 \times 4y^5.

    Answer ...

  2. (b)

    3(2x−1)−53(2x-1)-5.

    Answer ...

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Worked solution

2(a)

1. Multiply the coefficients and combine the algebraic factors

3x2×4y5=(3×4)x2y5=12x2y53x^2 \times 4y^5 = (3 \times 4)x^2y^5 = 12x^2y^5

Answer

12x2y512x^2y^5

2(b)

1. Expand the bracket and simplify the constant terms

3(2x−1)−5=6x−3−5=6x−83(2x-1)-5=6x-3-5=6x-8

Answer

6x−86x-8

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