Let f(x) = -4x - 2 and g(x) = 5x - 6. find f*g and state its domain.
a.-20x2 + 14x + 12; all real numbers
b. 8x2 + 34x - 30; all real numbers
c.8x2 + 34x - 30; all real numbers except x = 1
d.-20x2 + 14x + 12; all real numbers except x = 6

Question

Let f(x) = -4x - 2 and g(x) = 5x - 6. find f*g and state its domain. 
	a.-20x2 + 14x + 12; all real numbers
        b. 8x2 + 34x - 30; all real numbers
        c.8x2 + 34x - 30; all real numbers except x = 1
        d.-20x2 + 14x + 12; all real numbers except x = 6

sparrow2 · Answer

a

wcrmelissa2001 · Answer

@sparrow2 try and help m.klol understand :)

m.klol · Answer

Thank you so much

wcrmelissa2001 · Answer

(-4x-2)(5x-6) = (using foil method) -20x^2+24x-10x+12 = -20x^2+14x+12 
Since no restriction was given in the question and nothing was specified, domain is all real numbers

welshfella · Answer

there's a lot of guys just giving direct answers today

welshfella · Answer

this does not help people at all