Question

1. Simplify (5x – 3) (x+4) - (2x + 5) (2x - 1)​

Answer 1

Answer:

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Step-by-step explanation:

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

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

5x² + 20x - 3x - 12 - ( 6x² - 8x + 15x - 20)

5x² + 20x - 3x - 12 - 6x² + 8x - 15x + 20

5x² - 6x² + 20x - 3x + 8x - 15x - 12 + 20

-x² + 10x +8