Rich B. answered • 10/29/20
Tutor
New to Wyzant
Elementary Math
This says in words: 10 times x to the second power minus x minus 3. Are you supposed to do anything else with it (simplify, solve if given value of x)? or anything else?
Stephen K.
tutor
To factor this you need 2 numbers which multiply to -30(a x c) and add to -1 (coefficient of x term). this would be -6 and +5 so will rewrite the middle term as -6x +5x. this gives us
10x^2 +5x. -6x -3 [will now factor by groups]
5x(2x+1). -3(2x+1)= (5x-3)(2x+1)
If you are not familiar with the technique of factoring by grouping I suggest you read up on it. You will,need it
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10/29/20
Rich B.
Sorry I did not get back to you quickly. But I agree with the answer above. (2x+1) (5x-3). If you FOIL it, it will give you what you started with 10x^2-x-3. Best of luck with your work!
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10/29/20
Cy M.
Sorry, I forgot to clarify. I need to factor it10/29/20