7(2x-3)-5x{3-2x(1-5x)} (simplify)
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7(2x-3)-5x{3-2x(1-5x)}
= 14x - 21 -5x (3 - 2x + 10x²)
= 14x - 21 - 15x + 10x² - 50x³
= - 50x³ + 10x² + 14x - 15x - 21
= - 50x³ + 10x² - x - 21
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= 14x - 21 -5x (3 - 2x + 10x²)
= 14x - 21 - 15x + 10x² - 50x³
= - 50x³ + 10x² + 14x - 15x - 21
= - 50x³ + 10x² - x - 21
Hope it helps you
Mark me as a brainlist please ❤️❤️
Bye ☺️
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