Question

Simplify the following polynomial expression. 3x( 4x+5) -4 (-x-3) (2x -5)

Answer 1

20x ^2 + 19x -60

Explanation:

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Answer 2

20x^2 +19x - 60

Explanation:

3x( 4x+5) -4 (-x-3) (2x -5)

Distribute

12x^2 +15x - 4 (-x-3) (2x -5)

FOIL

12x^2 +15x - 4( -2x^2 -6x +5x +15)

12x^2 +15x - 4( -2x^2 -x +15)

Distribute

12x^2 +15x +8x^2 +4x -60

Combine like terms

20x^2 +19x - 60