emfranco1
29.05.2020 •
Mathematics
(x-3)(x+5) the product
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Ответ:
x^2 +2x -15
Step-by-step explanation:
FOIL
(x-3)(x+5)
first x*x = x^2
outer 5x
inner -3x
last -3*5 = -15
Add them together
x^2 +5x-3x-15
Combine like terms
x^2 +2x -15
Ответ:
x = (+-) sqrt 100
x = (+-) 10
so the values of x are -10 and 10