InspectorJoe
  • InspectorJoe
what times # = -20 but when added =- 7?
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Nnesha
  • Nnesha
what are the factors of 20 ?
InspectorJoe
  • InspectorJoe
factors of -20.. I know -5X4 but when I add it does not =-7
Nnesha
  • Nnesha
yes right and when u multiply -2 times -5 you will get 20 but not -20 so `none` are solving quadratic equation ?

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More answers

InspectorJoe
  • InspectorJoe
no. here is my problem 3y^2+7y-20= factors
Nnesha
  • Nnesha
i knew it! leading coefficient isn't one so u should multiply AC
Nnesha
  • Nnesha
so first multiply 3 times -20 then find two numbers
InspectorJoe
  • InspectorJoe
oh great yes I got thanks
anonymous
  • anonymous
|dw:1441759651765:dw|
anonymous
  • anonymous
congrats
Nnesha
  • Nnesha
remeber for AC method find two numbers when you multiply them you should get product of AC(a=leading coefficient , c=constant)
InspectorJoe
  • InspectorJoe
i came up with -17
Nnesha
  • Nnesha
and do you know you can't write the answer like (x+1st number) (x+2nd number)
Nnesha
  • Nnesha
what do you mean `-17`?
InspectorJoe
  • InspectorJoe
I took 3 X -20 to come up with my needed number
Nnesha
  • Nnesha
oh no i meant first multiply 3 times -20= which is equal to -60 now find two numbers when you multiply them you should get -60 but when you add or subtract them you should get -7
Nnesha
  • Nnesha
+7**
InspectorJoe
  • InspectorJoe
:O(?
Nnesha
  • Nnesha
??
Nnesha
  • Nnesha
if leading coefficient is one then we still have to multiply A times C but as u know when you multiply by one you will get the same thing but here leading coefficinet is 3 so multiply a times c = 3 times -20 then find two numbers
InspectorJoe
  • InspectorJoe
right great thanks
Nnesha
  • Nnesha
np :=)

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