Velacruzmaricarviz
Answered

Expand the following special products and simplify the result?
1. (x-1)(x+4)

Sagot :

Dashiedashviz
If expanded:

[tex]x^{2} + 4x - x - 4[/tex]

If simplified:

[tex]x^{2} + 3x - 4[/tex]
MinChanviz
(x-1) (x+4)

Use the Foil method.First multiply the first terms x times x is x^2
Then proceed to outer terms x times 4 is 4x
Inner terms, -1 times x is -x
Last terms, 4 times -1 times 4 is -4

x^2+4x-x-4=0
x^2+3x-4=0