Given that (2x-1)(x+5)=2x^2-mx-5, what is the value of m

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asked Apr 11, 2020 194k views

1 Answer

Nicklas Kevin Frank · Answer 1 · 2020-04-17T02:01:35+0000

expand the left side
2x(x + 5) - 1(x + 5) = 2x² - mx - 5
2x² + 10x - x - 5 = 2x² - mx - 5
2x² + 9x - 5 = 2x² - mx - 5
cancel 2x² and -5
9x = - mx

m = -9
sorry i was wrong, my mistake hehe

Given that (2x-1)(x+5)=2x^2-mx-5, what is the value of m

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Given that (2x-1)(x+5)=2x^2-mx-5, what is the value of m