Math, asked by tunny, 1 year ago

factorize
2x**2--5x-3

Answers

Answered by william
1
2x2-5x – 3 Multiply 2 with -3 we get -6 .which number we get the while add the two numbers get as – 5  and multiply -6 . The numbers are (x -6 ) (x +1) S0 2x2-5x – 3 =[(2x -6) (2x +1) ] / 2 Taking 2 common we get [2(x-3) (2x+1)] / 2 So (x-3) (2x+1) are the answers  

angelmuskan2812: ok
william: could u tell where i did the mistake
angelmuskan2812: u havnt did any mistake...bt tps wants that u to solve this question in the way we did fairly
william: this method taught in ma school days so i used to solve this
angelmuskan2812: watever..
william: fine dude
TPS: Hey the method you used is fine. And i don'rt want anyone to do in my way. I am saying you have done mistake. Your answers are generally good. So i thought you will figure out your mistake and correct it. you said the numbers are (x-6) and (x-1). I don't know how but i think -5x should be split as (-6x + x). And your final answer is wrong too.
TPS: hope you correct it soon.
angelmuskan2812: ya thats true..
william: now the answer has modified
Answered by TPS
6
2x² - 5x - 3
= 2x² - 6x + x - 3
= 2x(x-3) +1(x-3)
=(2x+1)(x-3)

(2
×-3 = -6 = -6×1)
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