SmokyWolves607
14.10.2019 •
Mathematics
Simplify this equation.
(equation and choices in image)
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Ответ:
b.)x³-7x²+3x+36
(x-4)(x²-3x-9)
Distribute x and -4 to x²-3x-9
=x²(x)-3x(x)-9(x)+x²(-4)-3x(-4)-9(-4)
=x³-3x²-9x-4x²+12x+36
Combine all liked terms
=x³-7x²+3x+36
Ответ:
81
Step-by-step explanation:
x² + 18x
x² + 2(x)(9) + 9²
x² + 2(x)(9) + 81
(x + 9)²