camibug camibug
  • 20-02-2017
  • Mathematics
contestada

What is the factored form of 2x2 − 7x − 15

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WillieH
WillieH WillieH
  • 20-02-2017
Find the GCF
The GCF is not known Thus we will need to factor by groups 

2 numbers when added  = -7 and when multiplied -30 those numbers would be 
-10 * 3

Thus the new for would be 
(2x^2 - 10x) (+ 3x - 15)  
Factor the 1st binomial The GCF is 2x Thus 2x(x - 5)
Factor the 2nd binomial The GCF is 3 Thus 3(x - 5)

Thus the factored form would be 
(2x + 3)(x - 5)

Hope that helps!!
Answer Link
dills0627 dills0627
  • 20-02-2017
(2x+3) (x-5) hope this helps
Answer Link

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